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Mo Tualeka
"ABSTRAK
Latar Belakang: Mortalitas pasien perforasi tukak peptik (PTP) masih stabil pada
angka 20-50% dimana penyebab terbanyak adalah sepsis. Tantangan ini memicu para
ahli bedah untuk meneliti faktor-faktor yang berhubungan dengan mortalitas dan
morbiditas penyakit ini. Selain pembedahan untuk kontrol infeksi, antibiotika
preoperatif diketahui menurunkan angka mortalitas. Penelitian ini bertujuan
mengetahui hubungan kesesuaian antibiotika empiris dengan hasil kultur sensitifitas
antibiotika terhadap ketahanan hidup 30 hari pasien perforasi tukak peptik di RSUPN
Dr Cipto Mangunkusumo (RSCM) Jakarta. Metode: Studi kohort terhadap pasien
PTP sejak Januari 2012 hingga Agustus 2015 di Departemen Bedah FKUI/RSCM
Jakarta, dimana PTP akibat keganasan dan trauma tembus dieksklusikan. Pola kuman
dan antibiotika pada pasien PTP disajikan sebagai studi pendahuluan. Hasil: dari 45
pasien yang didapat, angka mortalitas pasien PTP di RSCM sebesar 31,1% dan
ketahanan hidup sebesar 68,9%. Pola kuman pada pasien PTP adalah Escherichia coli
sebagai kuman Gram negatif terbanyak (35,85%) dan Streptococcus alfahemolytic
sebagai kuman Gram positif terbanyak (15,09%). Antibiotika lini kedua yang sesuai
untuk pasien PTP adalah Sulbactam/Ampicillin.
Tidak terdapat hubungan antara skor
Boey dan ketahan hidup, namun syok preoperatif memengaruhi ketahanan hidup
(nilai OR 14,67). Begitu juga dengan komorbiditas memengaruhi ketahanan hidup
sebesar 10,54 kali. Lama persiapan operasi tidak bermakna terhadap ketahanan hidup,
sedangkan durasi operasi memengaruhi ketahanan hidup sebesar 7,5 kali. Antibiotika
empiris yang sesuai dengan hasil kultur memengaruhi ketahanan hidup sebesar 12,57
kali. Kesimpulan: Pemberian antibiotika empiris yang tepat terbukti berhubungan
dengan ketahanan hidup pasien perforasi tukak peptik.;

ABSTRACT
Background: Mortality of patients with peptic ulcer perforation (PUP) was stable at
20-50%, which is the most common cause is sepsis. This challenge prompted the
surgeon to examine the factors associated with mortality and morbidity of this
disease. In addition to surgery to control infection, preoperative antibiotics are
known to reduce mortality. This study aims to determine the suitability of empiric
antibiotics relationship with antibiotic sensitivity culture results to the 30 days
survival of perforated peptic ulcer patients in Dr Cipto Mangunkusumo General
Hospital (RSCM) in Jakarta. Methods: A cohort study of patients PUP since January
2012 to August 2015 at Department of Surgery Faculty of medicine/RSCM Jakarta,
where PUP due to malignancy and penetrating trauma were excluded. Patterns of
bacteria and antibiotics in PUP patients presented as a preliminary study. Results:
45 patients were obtained, the mortality rate of patients in RSCM PUP by 31.1% and
amounted to 68.9% survival. Patterns of bacteria in a patient PUP is Escherichia
coli as most Gram-negative bacteria (35.85%) and Streptococcus alfahemolytic as
most Gram-positive bacteria (15.09%). The second line antibiotics are appropriate
for the PUP patients is sulbactam/ampicillin. There was no relationship between
Boey?s score and survivability, but the preoperative shock affect survival (OR 14.67).
Likewise with comorbidities affecting the survival of 10.54 times. Time to surgery on
survival was not significant, while the duration of surgery affecting the survival of 7.5
times. Empiric antibiotics in accordance with the culture results affects survival of
12.57 times. Conclusion: The provision of appropriate empiric antibiotic shown to be
associated with survival in patients with peptic ulcer perforation.
;Background: Mortality of patients with peptic ulcer perforation (PUP) was stable at
20-50%, which is the most common cause is sepsis. This challenge prompted the
surgeon to examine the factors associated with mortality and morbidity of this
disease. In addition to surgery to control infection, preoperative antibiotics are
known to reduce mortality. This study aims to determine the suitability of empiric
antibiotics relationship with antibiotic sensitivity culture results to the 30 days
survival of perforated peptic ulcer patients in Dr Cipto Mangunkusumo General
Hospital (RSCM) in Jakarta. Methods: A cohort study of patients PUP since January
2012 to August 2015 at Department of Surgery Faculty of medicine/RSCM Jakarta,
where PUP due to malignancy and penetrating trauma were excluded. Patterns of
bacteria and antibiotics in PUP patients presented as a preliminary study. Results:
45 patients were obtained, the mortality rate of patients in RSCM PUP by 31.1% and
amounted to 68.9% survival. Patterns of bacteria in a patient PUP is Escherichia
coli as most Gram-negative bacteria (35.85%) and Streptococcus alfahemolytic as
most Gram-positive bacteria (15.09%). The second line antibiotics are appropriate
for the PUP patients is sulbactam/ampicillin. There was no relationship between
Boey?s score and survivability, but the preoperative shock affect survival (OR 14.67).
Likewise with comorbidities affecting the survival of 10.54 times. Time to surgery on
survival was not significant, while the duration of surgery affecting the survival of 7.5
times. Empiric antibiotics in accordance with the culture results affects survival of
12.57 times. Conclusion: The provision of appropriate empiric antibiotic shown to be
associated with survival in patients with peptic ulcer perforation.;Background: Mortality of patients with peptic ulcer perforation (PUP) was stable at
20-50%, which is the most common cause is sepsis. This challenge prompted the
surgeon to examine the factors associated with mortality and morbidity of this
disease. In addition to surgery to control infection, preoperative antibiotics are
known to reduce mortality. This study aims to determine the suitability of empiric
antibiotics relationship with antibiotic sensitivity culture results to the 30 days
survival of perforated peptic ulcer patients in Dr Cipto Mangunkusumo General
Hospital (RSCM) in Jakarta. Methods: A cohort study of patients PUP since January
2012 to August 2015 at Department of Surgery Faculty of medicine/RSCM Jakarta,
where PUP due to malignancy and penetrating trauma were excluded. Patterns of
bacteria and antibiotics in PUP patients presented as a preliminary study. Results:
45 patients were obtained, the mortality rate of patients in RSCM PUP by 31.1% and
amounted to 68.9% survival. Patterns of bacteria in a patient PUP is Escherichia
coli as most Gram-negative bacteria (35.85%) and Streptococcus alfahemolytic as
most Gram-positive bacteria (15.09%). The second line antibiotics are appropriate
for the PUP patients is sulbactam/ampicillin. There was no relationship between
Boey?s score and survivability, but the preoperative shock affect survival (OR 14.67).
Likewise with comorbidities affecting the survival of 10.54 times. Time to surgery on
survival was not significant, while the duration of surgery affecting the survival of 7.5
times. Empiric antibiotics in accordance with the culture results affects survival of
12.57 times. Conclusion: The provision of appropriate empiric antibiotic shown to be
associated with survival in patients with peptic ulcer perforation."
2015
SP-PDF
UI - Tugas Akhir  Universitas Indonesia Library
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Budi Pratama Arnofyan
"Latar Belakang : Angka kejadian reseksi anastomosis pada kasus intususepsi
masih sangat tinggi. Hal ini dikarenakan masih seringnya pasien datang terlambat
setelah 72 jam, kurangnya SDM untuk melakukan reduksi non operatif, dan
kurangnya penunjang seperti USG untuk menegakkan diagnosa. Penting untuk
memperhatikan presisi, tehnik dan mempertimbangkan usus yang tersisa dalam
melakukan reseksi anastomosis. Hingga saat ini belum ada standar operasi khusus
yang dapat menjadi panduan bagi para dokter bedah dalam melakukan reseksi
akibat intususepsi. Karena itu, peneliti tertarik untuk mencari batas reseksi yang
diperlukan untuk menghasilkan suatu anastomosis end-to-end yang optimal dan
rendah tingkat kebocorannya. Penelitian akan dilakukan kepada tikus sebagai pilot
study sebelum dilakukan penelitian lebih lanjut.
Tujuan : Mengetahui batas reseksi usus yang optimal dinilai dari kebocoran
anastomosis berdasarkan grading kolagen pada batas reseksi tersebut.
Metode : Penelitian ini merupakan penelitian eksperimental dengan hewan coba
tikus putih Sprague Dawley. Tikus putih dilakukan intususepsi dengan
menggunakan stylet, dari proksimal ke distal. Setelah 45 menit, intususepsi di
reduksi.Tikus putih dikelompokkan dalam tiga kelompok sesuai batas reseksi
anastomosis, yang kemudian batas reseksi ini dilakukan pemeriksaan grading
kolagen. Setelah 5 hari, dilakukan laparotomi untuk menilai kebocoran
anastomosis.
Hasil : Pada perbandingan grading kolagen dengan reseksi usus didapatkan
grading terbanyak pada batas 1 adalah grading 2 (57,1 %), pada batas 2 grading 2
(71,4 %) ,batas 3 grading 3 (71,4%).Perforasi terbanyak ditemukan pada grading
2 sebanyak 5 sampel. Pada perbandingan batas reseksi dengan perforasi
didapatkan perforasi terbanyak pada batas 1 (85,7 %)
Simpulan : Terdapat perbedaaan grading kolagen pada batas reseksi usus dimana
batas kelompok batas 3 memiliki grading kolagen yang lebih baik ( grade 3 dan 4)
sehingga kelompok batas 3 lebih direkomendasikan secara histopatologis.
Grading kolagen dapat dinilai untuk melihat kemungkinan perforasi hasil
anastomosis. Terdapat faktor-faktor lain yang dapat mempengaruhi kejadian
perforasi selain grading kolagen.

Background : There is still high presentation of intussuseption cases with resection and
anastomose, caused of multi factors as : patient delay more than 72 hours, less on
profesional expert to do non operative reduction and less of examination such as ultra
sound to make a diagnose. That is important to take attention with pretition, tehniques
and less of intestine when do the resection. There is still no operative standard about the
boundary of resection cause of intussuseption, thats why the author want to do the
experimental to find the optimal part of resection with minimal leakage. The experimental
will do on rat as a pilot study.
Aim : How to get the optimal part of resection compared with anastomotic leakege based
on collagen grading.
Method : The experimental test using a Sprague Dawley rat. We make a intussuseption
on gut rat using a styleth from proximal to distal. The release do after 45 minutes. The
rats then separated into three boundaries group, and did resection-anastomose with each
gut from groups were performed a histopatologic test to count collagen grading. Leakage
of anastomose were examinated after 5 days
Result : In comparison between collagen grading and the extent of resection
obtained the highest grading in group 1 is grade 2 (57,1%), group 2 is grade 2
(71,4%), group 3 (71,4%). The highest Leakage can be found on grade 2 (5
sample).in comparison the extent of resection and leakage,the highest is group 1
(85,7%).
Summary : There are differences about collagen gradingin the extent of bowel
resection which is the third group of resection has higher collagen grading (3 and
4 ) and then more recommended as histopatologic exam. Collagen grading could
be marked to see possibilities of anastomotic leakage. There is some factors that
affect a leakage besides collagen grading.
"
Jakarta: Fakultas Kedokteran Universitas Indonesia, 2015
T-pdf
UI - Tesis Membership  Universitas Indonesia Library
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Tambunan, Rama Pranajaya
"[ABSTRAK
Lapangan Y memiliki permasalahan kepasiran saat memproduksi hidrokarbon dan
hal ini mengakibatkan penurunan effesiensi pompa secara drastis. Permasalahan
kepasiran dapat diatasi dengan beberapa cara, seperti mekanikal (sand cat, gravel
pack), kimia (Sand Aid) dan cara perforasi selektif (seleksi perforasi interval dan
perforasi berarah). Pemecahan permasalahan kepasiran dengan cara mekanik dan
kimia memerlukan biaya yang mahal. Pada tesis ini dilakukan pemecahan
permasalahan kepasiran dengan cara perforasi selektif ke arah tegasan horizontal
maksimum dan menghasilkan penurunan produksi pasir yang hampir sama dengan
cara mekanikal dan kimia serta dapat menekan biaya. Pada study ini digunakan 3 data
log image dan atribut seismik 3D untuk menentukan arah tegasan horizontal
maksimum.
Pada 3 data log image dilakukan interpretasi arah rekahan, breakout, dan induced
fracture. Dari tiga data log image, dapat dilihat bahwa rekahan insitu stress memiliki
arah tegasan horizontal maksimum yang hampir sama dengan tektonik stress. Arah
tegasan horizontal maksimum yang dihasilkan log image adalah N 040o E ? N 220o
E. Arah perforasi dapat dilakukan ke arah N 040o E ? N 220o E secara lokal area
sekitar sumur yang memiliki data log image. Untuk melihat penyebaran arah rekahan
lapangan Y dilakukan analisis atribut seismik. Metode analisis atribut seismik yang
digunakan adalah variance, ant track dan curvature. Metode atribut seismik variance
dan ant track yang dianalogikan pola rekahan memiliki arah yang sama dengan
rekahan log image yaitu N 055o E ? N 095o E dan pola tidak berubah dari Utara
hingga Selatan Lapangan Y, namun pola atribut curvature tidak memiliki
kecendrungan yang sama dengan arah lipatan hasil analisis rekahan log image.
Karena kesamaan arah umum rekahan log image dengan kecendrungan rekahan pada
atribut variance dan ant track, maka tegasan horizontal maksimum dari analisis log
image dapat digunakan dalam menentukan perforasi berarah sumur-sumur di
Lapangan Y yaitu N 040o E ? N 220o E.

ABSTRACT
Y field has sanding problems when producing hydrocarbons and as it results in a
drastic efficiency decrease in pump. Sanding problems can be solved in several ways,
such as mechanical (sand cat, gravel pack), chemical (Sand Aid) and selective
perforation way (perforation interval selection and oriented perforation). Sanding
problems solved by means of mechanical and chemical but it costly. This thesis has
done by using selectively perforating in the direction of maximum horizontal stress to
solves the sanding problems and the result make production of sand decreased that is
almost the same as the mechanical and chemical way to reduce the cost. In this study
used 3 images data log and 3D seismic attributes to determine the direction of
maximum horizontal stress.
At 3 image log data has interpretated the direction of fracture, breakout and induced
fracture. At three image log data, the insitu stress fracture have a horizontal
maximum stress direction which direction same to tectonic stress. The direction of
horizontal maximum stress from image data was N 040o E - N 220o E. The orient
perforation can be used towards N 040o E - N 220o E which applied the local area
around the image data only. To know fractures direction deployment in Y field by
using seismic attribute analysis. Seismic attribute analysis method was used variance,
ant track and curvature. Method of seismic attribute variance and ant tracks were
analogued to the pattern of fractures in the same direction with a fracture log image
was N 055o E - N 095o E and the pattern has not changed from the North to the South
Y Field, but the pattern attribute curvature did not similar to the folds image log
fracture analyst. Due to the similarity direction of the image log fracture with the
attribute variance and ant track, so that the maximum horizontal stress of the image
log analysis can be used in determining the perforation directional in the Y Field that
was N 040o E - N 220o E., Y field has sanding problems when producing hydrocarbons and as it results in a
drastic efficiency decrease in pump. Sanding problems can be solved in several ways,
such as mechanical (sand cat, gravel pack), chemical (Sand Aid) and selective
perforation way (perforation interval selection and oriented perforation). Sanding
problems solved by means of mechanical and chemical but it costly. This thesis has
done by using selectively perforating in the direction of maximum horizontal stress to
solves the sanding problems and the result make production of sand decreased that is
almost the same as the mechanical and chemical way to reduce the cost. In this study
used 3 images data log and 3D seismic attributes to determine the direction of
maximum horizontal stress.
At 3 image log data has interpretated the direction of fracture, breakout and induced
fracture. At three image log data, the insitu stress fracture have a horizontal
maximum stress direction which direction same to tectonic stress. The direction of
horizontal maximum stress from image data was N 040o E - N 220o E. The orient
perforation can be used towards N 040o E - N 220o E which applied the local area
around the image data only. To know fractures direction deployment in Y field by
using seismic attribute analysis. Seismic attribute analysis method was used variance,
ant track and curvature. Method of seismic attribute variance and ant tracks were
analogued to the pattern of fractures in the same direction with a fracture log image
was N 055o E - N 095o E and the pattern has not changed from the North to the South
Y Field, but the pattern attribute curvature did not similar to the folds image log
fracture analyst. Due to the similarity direction of the image log fracture with the
attribute variance and ant track, so that the maximum horizontal stress of the image
log analysis can be used in determining the perforation directional in the Y Field that
was N 040o E - N 220o E.]"
2016
T45126
UI - Tesis Membership  Universitas Indonesia Library
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Eka Arya Limianto
"Latar belakang: Mortalitas pascaoperasi dan komplikasi respiratorik berat telah didokumentasikan pada pasien COVID-19 pada berbagai studi. Namun, belum terdapat penelitian yang secara khusus mengevaluasi luaran dari laparatomi gawat darurat dengan perforasi gastrointestinal selama pandemi COVID-19 tahun 2020.
Metode: Studi dilakukan dengan desain observasional retrospektif sejak bulan Desember 2020-Februari 2021. Pasien perforasi gastrointestinal berusia lebih dari 15 tahun yang menjalani laparotomi gawat darurat diinklusi dalam penelitian. Luaran yang dievaluasi adalah mortalitas dan morbiditas, yang meliputi sindrom distres pernapasan akut (ARDS), reoperasi, durasi perawatan di rumah sakit, sepsis, admisi ke ruang perawatan intensif (ICU), dan infeksi daerah operasi (IDO).
Hasil: Terdapat 117 pasien pascalaparotomi yang direkrut dalam penelitian ini, dengan 95 (81,2%) pasien tidak terinfeksi SARS-CoV-2. Median usia untuk kelompok non-COVID dan kelompok COVID secara berturut-turut sebesar 41 (14¬92) tahun dan 39 (15¬77) tahun. Mortalitas umum tercatat pada angka 23,9%. Pasien perforasi COVID-19 yang menjalani tindakan laparotomi memiliki risiko yang lebih tinggi untuk mengalami kematian, ARDS, dan sepsis, serta mendapatkan tindakan reoperasi dibandingkan pasien non-COVID, dengan risiko odds masing-masing sebesar 2,769 (95% IK; 1,032–7,434), 8,50 (95% IK; 2,939–24,583), 3,36 (95% IK; 1,292–8,735), dan 3,69 (95% IK; 1,049–13,030). Tidak terdapat perbedaan antara pasien perforasi gastrointestinal yang terkonfirmasi COVID-19 dan pasien non-COVID dalam hal risiko IDO, lama durasi perawatan, dan admisi ke ICU. Usia, sepsis, dan ARDS merupakan faktor prognostik bermakna untuk mortalitas COVID-19.
Simpulan: Pasien perforasi gastrointestinal pascalaparotomi yang terkonfirmasi COVID-19 memiliki risiko mortalitas, ARDS, sepsis, dan menjalani tindakan reoperasi yang lebih tinggi dibandingkan pasien non-COVID.

Background: Postoperative mortality and severe respiratory complications have been documented in COVID-19 patients in various studies. However, no studies specifically evaluate the outcome of emergency laparotomy with gastrointestinal perforation during the 2020 COVID-19 pandemic.
Methods: The study was conducted with a retrospective observational design from December 2020-February 2021. Patients with gastrointestinal perforations aged more than 15 years who underwent emergency laparotomy were included in the study. The outcomes evaluated were mortality and morbidity, which included acute respiratory distress syndrome (ARDS), reoperation, duration of hospital stay, sepsis, admission to the intensive care room (ICU), and surgical site infections (SSI).
Results: There were 117 post-laparotomy patients recruited, with 95 (81.2%) COVID-19 negative patients. The median ages for the non-COVID group and the COVID group were 41 (14¬92) years and 39 (15¬77) years. General mortality was recorded at 23.9%. Patients with perforated COVID-19 who underwent laparotomy had a higher risk of dying, ARDS, and sepsis, as well as receiving re-surgery than non-COVID-19 patients, with an odds risk of 2.769 each (95% CI; 1,032–7,434), 8,50 (95% CI; 2,939–24,583), 3.36 (95% CI; 1,292–8,735), and 3.69 (95% CI; 1,049¬ – 13,030). There was no difference between gastrointestinal perforated patients with confirmed COVID-19 and non-COVID-19 patients in terms of risk of SSI, length of stay, and admission to the ICU. Age, sepsis, and ARDS are significant prognostic factors for COVID-19 mortality.
Conclusion: Post-laparotomy confirmed gastrointestinal perforation patients with COVID-19 have a higher risk of mortality, ARDS, sepsis, and undergoing reoperation than non-COVID-19 patients."
Depok: Fakultas Kedokteran Universitas Indonesia, 2021
T-Pdf
UI - Tesis Membership  Universitas Indonesia Library
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Sitorus, Ade Sari Nauli
"Latarbelakang: Apendisitis telah menjadi salah satu keadaan kegawatdaruratan medis yang membutuhkan penanganan medis segera. Apendisitis yang tidak ditangani segera dapat mengakibatkan terjadinya perforasi apendiks dan berakhir dengan terjadinya ruptur. Apendiks yang ruptur dapat menyebabkan drainase transluminal dari saluran pencernaan ke rongga abdomen. Penelitian ini bertujuan untuk mengidentifikasi karakteristik apendisitis perforasi menurut lokasi perforasi dan umur pasien.
Metode: Penelitian ini merupakan penelitian potong lintang dengan anilisis secara deskriptif. Sampel diambil dari semua sediaan histopatologi dari tahun 2005 hingga 2007 dengan diagnosis apendisitis perforasi. Sampel yang diperlukan pada penelitian ini sebanyak 68 sampel. Dalam penelitian ini pasien dikelompokkan menurut dekade umur sedangkan lokasi perforasi dibagi menjadi pangkal, tengah, dan ujung apendiks.
Hasil: Bagian tengah apendiks (45.58%) lebih banyak mengalami perforasi daripada bagian pangkal dan ujung apendiks. Kejadian perforasi terbanyak ditemukan pada pasien yang berusia antara 11 sampai 20 tahun atau pada kelompok dekade kedua (30.9%).
Kesimpulan: Bagian apendiks yang paling sering mengalami perforasi pada apendisitis adalah pada bagian tengah dan kejadian perforasi terbanyak ditemukan pada kelompok usia dekade kedua (umur 11-20 tahun).
Background: Appendicitis has been one of the emergency situations which need immediate medical intervention. If appendicitis is not treated immediately the appendix can undergo perforation and eventually rupture. The rupture of the appendix can cause transluminal drainage from the alimentary tract to the abdominal cavity and eventually causing some complications. This study aims to identify the characteristics of perforated appendicitis according to the location of perforation and the patient's age.
Method: The study is a cross-sectional descriptive study. The sample is taken from all appendicitis perforation cases from year the year of 2005 until 2007. The sample needed is 68. In this study patients are grouped according to age decade, while the location of perforation into base, middle, and tip of the appendix.
Results: The perforated area is more found in the middle (45.58%) than in the base or the tip of the appendix. The perforation rate mostly found in the age between 11 to 20 year or the second decade group of age (30.9%).
Conclusion: The perforated area mostly found in middle of the appendix and the perforation rate mostly found in the second decade group of age (age 11-20 year).
"
Jakarta: Fakultas Kedokteran Universitas Indonesia, 2009
S09040
UI - Skripsi Open  Universitas Indonesia Library
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Abdul Karim
"Kebutuhan material perforasi saat ini semakin meningkat seperti pada industri otomotif yaitu untuk pembuatan screen, shield separator, filter dan dalam bidang lain seperti peralatan medis, perobatan rumah tangga, peternakan dan akustik. Salah satu material perforasi yang banyak digunakan ialah baja galvanis karena tahan korosi sehingga sesuai digunakan di dalam industri maupun sebgai benda ornamen.
Material perforasi memiliki sifat mampu bentuk yang lebih rendah dibandingkan dengan material solid karena memiliki banyak lubang dengan dimensi dan jarak tertentu sehingga memperluas 'open area' walaupun Muzykiewicksz telah membuktikan bahwa sifat mampu bentuk (dalam hal ini nilai LDR) lembaran baja tanpa perforasi sama dengan lembaran baja perforasi heksagonal tanpa menggunakan pelumas.
Hasil penelitian secara umum menunjukkan bahwa sifat mekanis baja galvanis perforasi heksagonal menurun yaitu dari elongasi uniform (eu)=28,15% dan elongasi fracture (ef) 39,48% untuk baja galvanis tanpa perforasi menjadi eu 10,74% dan ef 17,35% demikian pula dengan UTS dari 33,71 kg/mm2 menjadi 31,81 kg/mm2. Koefisien pengerasan regang (n) untuk baja galvanis tanpa perforasi ialah 0,266 dan nilai n untuk baja galvanis perforasi heksagonal ialah 0,097. Pelumas cair efektif digunakan pada proses deep drawing baja galvanis karena dapat meningkatkan nilai LDR dari 2,15 menjadi 2,25 untuk baja galvanis tanpa perforasi dan untuk baja galvanis perforasi nilai LDR 2,15 menjadi 2,2. Pada proses stretching pelumasan batik cair maupun padat mampu meningkatkan kedalaman hasil stretching. Namun pelumas cair memberikan hasil yang lebih baik dibandingkan dengan pelumas padat. Dengan menggunakan pelumas cair LDH baja galvanis perforasi heksagonal meningkat dari 1,45 menjadi 1, 47."
Depok: Fakultas Teknik Universitas Indonesia, 2000
S41616
UI - Skripsi Membership  Universitas Indonesia Library
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Maman Kartaman Ajiriyanto
"Penelitian ini bertujuan untuk mengetahui pengaruh kondisi pelumasan terhadap mampu bentuk lembaran kuningan perforasi heksagonal dan membandingkan kekuatan mekanis dan sifat mampu bentuk kuningan perforasi dengan tanpa perforasi. Dimana sifat mampu bentuk dipengaruhi oleh nilai LDR proses deep drawing dan nilai kedalaman stretching dan distribusi regangan proses stretching."
Depok: Fakultas Teknik Universitas Indonesia, 2000
S41536
UI - Skripsi Membership  Universitas Indonesia Library
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Andri Apriyadi
"Kecenderungan baru dalam dunia industri adalah penggunaan struktur ringan yang dapat diperoleh dengan menggunakan logam ringan berkekuatan tinggi, komposit logam, atau struktur berongga. Perforasi merupakan salah satu alternatif pengurangan berat yang cukup baik, tetapi didalam disain perforasi dapat menurunkan sifat mampu bentuknya. Penurunan sifat mampu bentuk ini dapat dikurangi dengan mengatur pola pelubangan dari Jembaran baja galvanis tersebut.
Pada penelitian ini digunakan lembaran baja galvanis 0,8 mm dengan alasan baja galvanis digunakan secara luas didalam industri. Pelubangan dilakukan dengan cara pengeboran dengan menggunakan mesin CNC.
Dalam penelitian ini telah dicoba untuk melihat pengaruh pola perforasi terhadap sifat mampu bentuk (nilai UTS, nilai regangan merata, nilai regangan total, nilai koefisien pengerasan regang, nilai tropi plastis, EDH, dan LDR) dari lembaran baja galvanis 0,8 mm. Pola perforasi yang digunakan adalah pola segiempat dan heksagonal dengan lubang berdiameter 3 mm lalu hasilnya dibandingkan dengan lembaran tanpa perforasi. Pengujian dilakukan tanpa menggunakan pelumas untuk uji simulative.
Dari hasil penelitian memperlihatkan bahwa lembaran perforasi menyebabkan penurunan nilai koefisien pengerasan regang sebesar 54% untuk pola segiempat dan 64% untuk pola heksagonal, penurunan nilai elongasi merata sebesar 68% untuk pola segiempat dan 61% untuk pola heksagonal, penurunan nilai elongasi total sebesar 56% untuk pola segiempat dan 70% untuk pola heksagonal, dan penurunan LDH sebesar 58% untuk pola segiempat dan 55% untuk pola heksagonal bila dibandingkan dengan lembaran tanpa perforasi. Sedangkan untuk nilai UTS, nilai anistropi platis dan LDR lembaran perforasi baik perforasi segiempat maupun heksagonal tidak mengalami penurunan yang berarti bila dibandingan dengan lembaran tanpa perforasi. Antar pola segiempat dengan pola heksagonal tidak ada perbedaan yang berarti pada sifat maupun bentuk lembaran baja galvanis ini."
Depok: Fakultas Teknik Universitas Indonesia, 2000
S41590
UI - Skripsi Membership  Universitas Indonesia Library
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Fajar Awalia Yulianto
"Morbiditas dan mortalitas apendisitis akut disebabkan karena perkembangan apendisitis akut menjadi perforasi apendiks. Hal-hal yang menyebabkan kerentanan apendiks belum banyak diteliti dan belum diketahui sebab pastinya. Tujuan dari penelitian ini adalah untuk mengetahui faktor-faktor apa saja yang dapat memprediksi terjadinya perforasi apendiks. Penelitian menggunakan desain kasus kontrol menggunakan data sekunder berupa rekam medis penderita apendisitis akut dewasa tahun 2013-2014 dengan jumlah kasus (perforasi apendiks) 36 dan kontrol (non perforasi) 93. Analisis data yang dilakukan meliputi deskriptif, chi square, receiver operating characteristic, dan regresi logistik multivariat. Dua faktor prediksi yang bermakna sebagai faktor prediksi perforasi apendiks dalam analisis regresi logistik multivariat adalah suhu badan diatas 37,50C dengan odds ratio (OR) 7,54 (95% CI 2,01; 28,33), jumlah leukosit diatas 11.500/mm3 dengan OR 12,12 (95% CI 4,03; 36,48) Perlu validasi pemeriksaan suhu badan di RS, penelitian lebih lanjut untuk mencari faktor prediksi lainnya, persiapan operasi segera untuk pencegahan komplikasi perforasi apendiks, dan pemberian informasi ke masyarakat bahwa sakit perut dapat bersifat gawat darurat.

Appendix perforation is the causation for acute appendicitis morbidity and mortality. Factors that may cause appendix vulnerability has not been extensively studied before and the main cause is still yet unknown. The goal of this study is to analyze what factors that could be used to predict appendix perforation. This study is a case control study using 2013-2014 medical records as data. Case group pooled from 36 perforated appendix adult (above 15 years old) patients, while control group pooled from 93 non perforated appendix adult patients. Data analysis conducted are descriptive, chi square, receiver operating characteristic, and multivariate logistic regression. There are two prediction factors which significantly associated with perforated appendix. Those are body temperature above 37,50C with odds ratio (OR) 7,54 (95% CI 2,01; 28,33), and leucocytes count above 11.500/mm3 with OR 12,12 (95% CI 4,03; 36,48). Further studies and body temperature validation on each hospital are needed to find other prediction factors, preparing pre operative equipment for immediate definite measure like surgery, to prevent the complication of perforated appendix, and education to people that abdominal pain is not always causing by gastric problem and it might be a case of emergency.
"
Depok: Fakultas Kesehatan Masyarakat Universitas Indonesia, 2014
T42151
UI - Tesis Membership  Universitas Indonesia Library
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Palupi, Maharani Ratna
"[ABSTRAK
Telah dilakukan penelitian tentang pengaruh diameter perforasi terhadap koefisien
absorpsi bunyi pada material gipsum secara eksperimen dengan menggunakan
metode pengukuran yang tercantum dalam ISO 354-1985. Sampel divariasikan
terhadap kondisi tanpa perforasi dan terhadap diameter perforasi yaitu 0,8 mm, 1,2
mm, 2 mm, 4 mm, 6 mm, 8 mm, 10 mm dan 12 mm. Ada dua konfigurasi sampel
yang diteliti, yaitu sampel lapis tunggal (Sampel T) dan sampel sandwich (Sampel
S). Hasil penelitian menunjukkan adanya peningkatan koefisien absorpsi bunyi
hingga 27,97% seiring dengan penambahan diameter perforasi terutama di
frekuensi 125 Hz, 250 Hz, dan 500 Hz. Kenaikan koefisien absorpsi bunyi juga
terjadi pada saat diberikan sisipan rockwool di antara dua panel gipsum. Kedua
konfigurasi sampel dengan diameter perforasi 12 mm bisa digunakan sebagai
pilihan bahan penyerap bunyi untuk pengendalian bunyi di frekuensi 125 Hz, 250
Hz, dan 500 Hz.

ABSTRACT
Investigation on the influence of the perforation diameter to the sound absorption
coefficient in the gypsum material has been conducted experimentally by using
measurement methods in ISO 354-1985. The samples were varied on the condition
perforation. Perforation diameter about none, 0.8 mm, 1.2 mm, 2 mm, 4 mm, 6 mm,
8 mm, 10 mm and 12 mm. There were two configurations of samples, namely a
single-layer samples (Sample T) and sandwich samples (Sample S). The results
show the increasing in sound absorption coefficients up to 27,97% along with the
addition of diameter perforations, especially in the frequency of 125 Hz, 250 Hz,
and 500 Hz. The increasing in sound absorption coefficient also occur during
insertion of rockwool between two gypsum panels. Both sample configuration with
12 mm diameter perforation can be used as a sound absorbent material to control
sound at frequencies of 125 Hz, 250 Hz, and 500 Hz., Investigation on the influence of the perforation diameter to the sound absorption
coefficient in the gypsum material has been conducted experimentally by using
measurement methods in ISO 354-1985. The samples were varied on the condition
perforation. Perforation diameter about none, 0.8 mm, 1.2 mm, 2 mm, 4 mm, 6 mm,
8 mm, 10 mm and 12 mm. There were two configurations of samples, namely a
single-layer samples (Sample T) and sandwich samples (Sample S). The results
show the increasing in sound absorption coefficients up to 27,97% along with the
addition of diameter perforations, especially in the frequency of 125 Hz, 250 Hz,
and 500 Hz. The increasing in sound absorption coefficient also occur during
insertion of rockwool between two gypsum panels. Both sample configuration with
12 mm diameter perforation can be used as a sound absorbent material to control
sound at frequencies of 125 Hz, 250 Hz, and 500 Hz.]"
2016
T44954
UI - Tesis Membership  Universitas Indonesia Library
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