43 research outputs found
Harga Diri Dan Kecenderungan Narsistik Pada Pengguna Friendster
Fenomena jejaring sosial seperti Friendster kian marak dijumpai sebagai saranaberinteraksi dalam dunia maya belakangan ini. Pengguna friendster sendiri adalahkelompok yang unik dengan karakteristik yang unik. Beberapa karakteristik psikologis yangditengarai menjadi ciri kas kelompok ini adalah kecenderungan narsistik dan harga diri.Penelitian ini bertujuan untuk menguji secara empirik hubungan antara kecenderungannarsisistik dan harga diri pada pengguna Friendster. Hipotesis yang diajukan adalah adahubungan negatif antara harga diri terhadap kecenderungan narsisistik pada penggunaFriendster. Semakin rendah harga diri, maka semakin tinggi pula kecenderungan narsisistikpada pengguna Friendster, sebaliknya semakin tinggi harga diri, maka semakin rendah pulakecenderungan narsisistik pada pengguna Friendster. Subjek penelitian memilikikarakteristik, yakni aktif menggunakan Friendster selama minimal enam bulan. Penelitianini menggunakan metode kuantitatif dengan alat ukur Skala Kecenderungan Narsisistik danSkala Harga Diri. Kedua skala tersebut disebar di Kota Yogyakarta dengan menggunakanincidental sampling dan jumlah subjek didapat sebanyak 70 orang. Berdasarkan hasilanalisis didapatkan rxy = -0,346 dengan
Pengaruh Pengenceran Dan Pengadukan Limbah Dapur Daerah Bulusan (Studi Kasus Rasio C/n 17 : 1) Terhadap Peningkatan Produksi Biogas Dengan Menggunakan Ekstrak Rumen Sapi Sebagai Starter
Soaring oil prices affect economic activity in the world, including Indonesia, it would encourage the government to develop renewable energy including biogas. Kitchen wastes has the potential to be a source of renewable energy, namely biogas. Waste food scraps and kitchen activities in sufficient quantities of the restaurants in the area were collected Bulusan, was treated like refinement and homogenization, the extract phase and its substrates include cattle as a source of rumen anaerobic bacteria into the reactor with the addition of water and stirring as a variation. From the results it is concluded, that the addition of water and stirring affect the amount of gas produced. It is known that waste as much as 150 ml of water is added, is able to produce more gas volume than others. In the study indicated a decrease and an increase in gas production. This is due to the formation of gas phase occurs, starting from the stage of hydrolysis, acidogenesis, acetogenesis, and methanogenesis
Isolasi dan Karakterisasi Senyawa Turunan Acetogenin dari Daun Sirsak (Annona Muricata) Serta Uji Toksisitas
The research is aims to determine acetogenin derivative isolated from graviola leaf (Annona muricata) and study their toxicity activity. Graviola leaf powder was macerated using ethanol and its isolate were fractionated using methanol. Characterization acetogenin compound in methanol fraction using kedde test, UV-Vis and FTIR spectrophotometer. Kedde test result showed the presence of colour changing of dot to pink. UV-Vis data shows that absorption at 222 nm. FTIR spectra data showed the presence of cluster of C=O, C-C(=O)-O and O-C-C with the peak of the wave number at 1741 cm-1 , 1164 cm-1 and 1076 cm-1. The identification result showed that methanol fraction is acetogenin. The results of toxicity tests methanol fraction from the leaves of the soursop has LC50 value of 35.51 ppm
Implementasi Konsep Lean Manufacturing Guna Mengurangi Pemborosan di Lantai Produksi
CV Marga Jaya (Pabrik II) adalah Perusahaan yang bergerak di bidang pembuatan paving/conblock secara masal. CV Marga Jaya (Pabrik II) selalu berusaha mengurangi pemborosan yang terjadi selama proses produksi paving/conblock. Pemborosan yang terjadi antari lain, adanya produksi berlebih, transportasi, waktu menunggu, dan cacat yang berlebih. Lean Manufacaturing merupakan pendekatan yang bertujuan untuk merampingkan proses dengan mengurangi pemborosan yang terjadi selama proses produksi. Pendekatan konsep lean manufacturing dimulai dengan membuat big picture mapping, dilanjutkan dengan waste assessment model (WAM), diagram cause and effects, value stream analysis tools (VALSAT), usulan perbaikan waste yang terjadi, dan pembuatan descrete event simulation (DES). Hasil yang didapat bahwa waktu menunggu yang terjadi diperbaiki dengan menggunakan conveyor, produksi berlebih yang terjadi diperbaiki dengan melakukan perencanaan produksi, dan cacat berlebih yang terjadi diperbaiki dengan menggunakan 5W+1H dengan sebelumnya menggunakan konsep lean six sigma dan didapat nilai sigma sebesar 4,31 sigma. Simulasi proses menunjukkan dengan mengurangi pemborosan, kemampuan produksi naik 15,36% (penjemuran 30 hari) dan 147,20% (penjemuran 7 hari)
Implementasi Antena dan Perancangan Robot Sederhana dari Bahan Daur Ulang di Sekolah Tunas Alam Bekasi
- Pemanfaatan kembali barang bekas dapat diimplementasikan untuk kegunaan sehari hari. Penelitian berbasis pengabdian masyarakat ini mengimplementasikan desain antenna untuk televisi pada frekuensi 470 – 890 MHz, dan perancangan robotic sederhana yakni Line Follower Robot, Brushbot, dan Waterlamp. Implementasi abdima untuk desain antenna dan robot sederhana ini bertempat di Sekolah Tunas Alam Bekasi, yakni tempat belajar disekitar pembuangan sampah, Bantar Gebang. Pada paper ini dianalisa lebih khusus mengenai desain antenna untuk TV yakni jenis yagi yang bekerja pada frekuensi 470 – 890 MHz dengan menggunakan dua bahan material yang berbeda. Bahan material yang akan dipakai adalah aluminium dan tembaga. Perbedaan nilai permitifitas () dari bahan alumunium dan tembaga ini akan menghasilkan beberapa parameter antenna yang berbeda-beda, meliputi VSWR, S-Parameter, Farfield dan Gain. Dari hasil simulasi yang dilakukan, diketahui bahwa antenna yagi yang menggunakan bahan alumunium memiliki bandwidth yang lebih besar sehingga dapat menangkap stasiun televisi yang lebih banyak. Kata Kunci – Antena Televisi, Yagi Antenna, Robot Sederhana
The Correlation Between Body Fat Distribution and Medial Tibiofemoral Joint Space Width in Obese Knee Osteoarthritis Patients
Background: Obesity is a major risk factor for knee osteoarthritis. The relationship between obesity and OA may not be simply due to a mechanical factor. Evidences suggest that metabolic factors related to body fat play important roles, but the specific type of fat that contributes to OA is unclear. The objective of this study was to examine the possible correlation between body fat distribution with knee OA.Methods: This study was a cross sectional study of OA patients with obesity visiting the Rheumatology and Geriatric-Internal Medicine clinics at Cipto Mangunkusumo Hospital between January-March 2016. Data was collected by consecutive sampling. Knee OA was diagnosed from clinical and radiologic evaluation based on American College of Rheumatology 1986 criteria. Body fat distribution was measured by bioelectrical impedance analysis (BIA). Conventional radiography of the knee was used to evaluate jointspace narrowing (JSN). The correlation between body fat distribution and joint space width was analyzed by bivariate analysisResult: A total of 56 subjects were recruited, majority were women (73.2%). Median visceral fat was 12% (7.5-16.5), median subcutaneous fat was 30.2% (16.5-37.9), and median visceral to subcutaneous fat ratio was 0,40 (0,26-0,80). The mean medial tibiofemoral joint space width was 2.34 mm (SD 0.78). Bivariate analysis revealed a correlation between visceral fat and medial tibiofemoral joint space width (r: -0,474 p: < 0,001). There is no correlation between subcutaneous fat and medial tibiofemoral joint space width (r: -0,187 p:0,169); and visceral to subcutaneous fat ratio and medialtibiofemoral joint space width (r: -0,225 p: 0,09).Conclusion: Visceral fat is correlated with medial tibiofemoral joint space width (r: -0.474 p: < 0.001). There is no correlation between subcutaneous fat, and visceral to subcutaneous fat ratio, with medial tibiofemoral joint space width
The Association of Lipoprotein Changes and the Development of Plasma Leakage in Dengue Infection
There’s interrelationship between infection and lipoprotein. This is a cohort prospective study which conducted November 2010 – February 2011. This study aimed to assess the changes of HDL-C, LDL-C, total cholesterol (TC), triglyceride (TG), in acute and critical phase of dengue infection and its association with plasma leakage. Subjects who had fever 48 hours or less and Dengue NS1 antigen test positive were admitted to Cipto Mangunkusumo Hospital Jakarta. We examined clinical and CBC daily; level of albumin, HDL-C, LDL-C, TC, TG; ultrasound to find ascites and pleural effusion. Among 51 subjects, 21 subjects (41%) had plasma leakage. There were significant lower of HDL-C, LDL-C, and higher TG in critical phase than acute phase. In critical phase, subjects with plasma leakage had a significant lower HDL-C level [26.3 (8.2) vs 33.1 (12.1) mg/dL, p=0.029] but not for LDL-C, TC, and TG. They also had a significantly higher reduction in HDL-C [19.6 (9.1) vs 11.5 (5.8) mg/dL, p<0.0001] and TC [25.1 (20.0) vs 15.2 (14.5) mg/dL, 0.045] over the course of acute to critical phase. Lipoprotein changes during dengue infection were more pronounced among subjects who developed plasma leakage. The higher reduction in HDL-C is associated with the development of plasma leakage.