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EFFECT OF POLYVINYLPYRROLIDONE ADDITIVE ON MEMBRANE CHARACTERISTICS IN THE PREPARATION OF POLYETHERSULFONE HOLLOW FIBER MEMBRANE Syahril Ahmad
Jurnal Kimia Terapan Indonesia Vol 3, No 2 (1993)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4416.398 KB) | DOI: 10.14203/jkti.v3i2.272

Abstract

Preparation by applying the dry - wet spinning method and characterization of polyethersulfone (PES) hollow fiber membranes for ultrafiltration purpose have been studied. The characteristics of the hallow fibers studied include water flux, rejection rate, molecular weight cut - off and cross section structure. The membrane was prepared using the dope solution composition of 20% PES, 6% Polyvinylpyrrolidone (PVP) and 74% of n-Methyl Pyrrolidone as solvent. The effect of molecular weight of PVP and the small amount of water added in the dope solution have also been studied. The results show that increasing the molecular weight of PVP in the dope solution will decrease the rejection coefficient of the membrane towards dextran solution. Effect of a small amount of water in the dope solution as wetting agent is not obvious as indicated by the fluctuations in the results. Higher operating pressure during ultrafiltration process give higher water flux, but the effect on membrane rejection is not clear. By taking the rejection coefficient as 90 %, the molecular weight cut-off of the hallow fiber prepared are 40,000; 80,000; 25,000 and 110,000.
PENGARUH BERAT MOLEKUL ADITIF PADA PENAMPANG MELINTANG DAN KARAKTERISTIK MEMBRAN SERAT BERONGGA POLISULFON, YANG DIAMATI DENGAN ALAT SCANNING ELECTRON MICROSCOPY Syahril Ahmad
Jurnal Kimia Terapan Indonesia Vol 10, No 1-2 (2000)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (4315.869 KB) | DOI: 10.14203/jkti.v10i1-2.184

Abstract

Cross section of polysulfone membranes hollow fiber spun bydry - wet process have been studied. Composition of membraneobserved composed of 16% Polysulfone (PS) , 64% dimethylAcetamide (DMAc) as solvent and 18% Polyetylene glycol (PEG)as additive. Molecular weight of polyetylene glycols used were 200,300 and 400 Daltons. Fiber of membranes were charaterized bydextrane solution to find rejection coefficient and molecular weightcut - off of the membrane. Cross sections of hollow fiber membraneswere observed by Scanning Electron Microscopy (SEM).Results of the experiment show that, molecular weight ofpolyethylene Glycol additif used in spinning of hollow fibermembrane affects form of cross section of substructure andmolecular weight cut - off the membrane obtained. This researchwas aimed to predict the pore size of membrane made based onmolecular weight of additive used.
PEMEKATAN PROTEIN DALAM SUSU DAN KECAP MENGGUNAKAN MEMBRAN SERAT BERONGGA Syahril Ahmad
Jurnal Kimia Terapan Indonesia Vol 11, No 1 (2009)
Publisher : Research Center for Chemistry - LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3332.525 KB) | DOI: 10.14203/jkti.v11i1.176

Abstract

Concentration of protein which found in freshmilk, sweet ketchup and salt ketchup have been done byusing hollow fiber polysulfone membrane with differentmolecular weight cut - off (MWCO). Membranes usedin these experiments have MWCO 66,000, 87,000 and 149,000 Dalton. Experimental were conducted bycontinues flow system and parameters observed in these experimental were protein, sugar and salt, respectively.Protein infresh milk rejected by membrane above 98 %,but all of sugar pass through to the permeate side. Forsweet ketchup feed sample, rejection coefficient towardsprotein was smaller than feed fresh milk. The higherrejection coefficientfor sweet ketchup was 48 % for themembrane with MWCO 66.000 Dalton. Rejectioncoefficient of membrane towards protein for salt ketchup sample was smaller than sweet ketchup sample. For saltketchup, the higher rejection coefficient towards proteinwas 27 % for the membrane with MWCO 66,000Dalton. Rejection coefficient of membrane towardsNaCl for feeding solution sweet ketchup and saltketchup were in the rlJ.1Jgefrom 8.74 to 23.96 %.Key words : Hollow fiber membrane, ultrafiltration, protein,milk, ketchup.
Pengaruh Manajemen Laba, Intensitas Aset Tetap, Intensitas Persediaan Dan Umur Perusahaan Terhadap Tax Avoidance Pada Perusahaan Farmasi Dan Kesehatan Yang Terdaftar Di Indeks Saham Syariah Indonesia (ISSI) Periode 2016-2021 Weny Wijayanti; As’ad Isma; Syahril Ahmad
JURNAL MANAJEMEN DAN BISNIS EKONOMI Vol. 1 No. 2 (2023): April : JURNAL MANAJEMEN DAN BISNIS EKONOMI
Publisher : Institut Teknologi dan Bisnis (ITB) Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1613.636 KB) | DOI: 10.54066/jmbe-itb.v1i2.132

Abstract

Penelitian ini bertujuan untuk mengetahui bagaimana pengaruh manajemen laba, intensitas aset tetap, intensitas persediaan dan umur perusahaan terhadap tax avoidance pada perusahaan farmasi dan kesehatan yang terdaftar di indeks saham syariah Indonesia (ISSI) periode 2016-2021. Teknik pengambilan sampel dalam penelitian ini menggunakan purposive sampling. Diperoleh sebanyak 6 perusahaan dengan jumlah data selama 6 tahun yaitu 36 data yang menjadi sampel dalam penelitian ini. Penelitian ini merupakan penelitian kuantitatif dengan menggunakan data sekunder. Teknik analisis yang digunakan dalam penelitian ini adalah analisis regresi data panel yang diolah dengan aplikasi E-Views 12. Hasil penelitian ini secara parsial menunjukkan bahwa variabel manajemen laba tidak berpengaruh terhadap tax avoidance, intensitas aset tetap berpengaruh positif dan signifikan terhadap tax avoidance, sedangkan intensitas persediaan dan umur perusahaan berpengaruh negatif dan signifikan terhadap tax avoidance. Penelitian ini juga secara simultan menunjukkan bahwa variabel manajemen laba, intensitas aset tetap, intensitas persediaan dan umur perusahaan memiliki pengaruh terhadap tax avoidance pada perusahaan farmasi dan kesehatan yang terdaftar di indeks saham syariah Indonesia (ISSI) periode 2016-2021 dengan nilai koefisien determinasi untuk model ini adalah sebesar 87,80%.
Pengaruh Fitur, Variasi Produk, dan Kemudahan Transaksi terhadap Kepuasan Pengguna Mobile Banking pada Lembaga Keuangan Perbankan Syariah di Kota Jambi M. Farhan; Eja Armaz Hardi; Syahril Ahmad
Jurnal Nuansa : Publikasi Ilmu Manajemen dan Ekonomi Syariah Vol. 2 No. 3 (2024): September : Jurnal Nuansa : Publikasi Ilmu Manajemen dan Ekonomi Syariah
Publisher : Asosiasi Riset Ilmu Manajemen Kewirausahaan dan Bisnis Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/nuansa.v2i3.1128

Abstract

This research aims to determine the influence of features, product variations and ease of transactions on mobile banking user satisfaction at sharia banking financial institutions in Jambi City. This research used a quantitative approach which was carried out by distributing questionnaires to 112 Mobile Banking users in Jambi City. The methods used in this research are instrument tests (validity and reliability tests), classical assumption tests (normality, multicollinearity and heteroscedasticity tests) and multiple liner analysis along with statistical tests (t test, F test and R2 Determination Coefficient). The results of this research show that features have a positive and significant effect on user satisfaction which can be determined using the t test with a significance value of 0.001 < 0.05 and a value of tcount > ttable, namely 3.426 > 0.198217. Product variations have a positive and significant effect on user satisfaction as evidenced by the significance value of 0.001 < 0.05 and the tcount > ttable value, namely 3.577 > 0.198217. ease of transactions has a positive and significant effect on user satisfaction which can be seen with a significance value of 0.001 < 0.05 and a value of tcount > ttable, namely 3.385 > 0.198217. Simultaneously, features, product variations and ease of transactions have a positive and significant effect on mobile banking user satisfaction at sharia banking financial institutions which can be seen from the F test, namely fcount > ftable or 40.058 > 2.69 and the resulting significance value is 0.000 < 0.005. The determinant coefficient value is 0.514 or 51.4% and the remaining 0.486 or 48.6% can be explained by other variables outside this research.
Pengaruh Shopping Enjoyment, Pengalaman Pembelian dan Religiusitas Terhadap Minat Beli Produk Fashion Di Online Shop (Studi Pada Generasi Z di Kota Jambi) Elza Berta Salsabila; Agustina Mutia; Syahril Ahmad
JURNAL ILMIAH RESEARCH STUDENT Vol. 1 No. 1 (2023): September
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jirs.v1i1.34

Abstract

Someone's urge to buy anything develops after being stimulated by the object he sees. This desire first develops into a desire to test the product, then develops into a desire to buy in order to have it. The formation of purchase intention is influenced by several factors, one of which is shopping enjoyment, purchasing experience and religiosity. This study aims to determine the effect of shopping enjoyment, purchasing experience and religiosity on consumer buying interest in fashion products in online shops. Samples were taken as many as 270 respondents using the sampling method in this study, namely Proportionate Stratified Random Sampling. This study used the SPSS calculator version 22. The results showed that shopping enjoyment, buying experience, and religiosity had a positive and significant effect on the intention to buy fashion products in online shops. Based on data analysis in this study, these variables are valid and reliable
Pengaruh Perilaku Konsumen, Word Of Mouth, dan Labelisasi Halal Berdasarkan Konsep Syariah Terhadap Keputusan Penggunaan Jasa Grab-Food di Kota Jambi Hani Yustina; Titin Agustin Nengsih; Syahril Ahmad
Moneter : Jurnal Ekonomi dan Keuangan Vol. 2 No. 1 (2024): Januari : Moneter : Jurnal Ekonomi dan Keuangan
Publisher : Asosiasi Riset Ekonomi dan Akuntansi Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/moneter.v2i1.121

Abstract

This study aimed to determine the effect of consumer behavior, word of mouth, and halal labeling on the decision to use Grab Food services. The population in this study are consumers who use Grab Food services. The sample in this study were 96 consumers who were obtained through the sampling technique with the Lemeshow method. The data collection method uses a questionnaire which is distributed to all consumers and the data is processed using multiple linear regression analysis. The results of multiple linear analysis show that consumer behavior, word of mouth, and halal labeling have a positive and significant effect on the decision to use grab food services. This research is expected to increase knowledge regarding consumer behavior, word of mouth, and halal labels in using Grab Food services and maintain good relations with consumers by maintaining the quality of products and services that can be used to make usage decisions.
ANALISIS PEMBIAYAAN PADA PRODUK AR-RUM HAJI DI PT. PEGADAIAN UPC (UNIT PELAYANAN CABANG) SIMPANG KAWAT Ricka Ayu Apriza; Youdhi Prayogo; Syahril Ahmad
Musytari : Neraca Manajemen, Akuntansi, dan Ekonomi Vol. 8 No. 2 (2024): Musytari : Neraca Manajemen, Akuntansi, dan Ekonomi
Publisher : Cahaya Ilmu Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.8734/musytari.v8i2.5499

Abstract

Penelitian ini berjudul “Analisis Pembiayaan Pada Produk Arrum Haji Di PT.Pegadaian UPC (Unit Pengelola Cabang) Simpang Kawat”. Pegadaian syariah merupakan salah satu Lembaga Keuangan Syariah (LKS) yang dalam kegiatan penyaluran dana kepada masyarakat menggunakan akad gadai (rahn) yang berlandaskan syariah. Produk. Penelitian ini bertujuan untuk menjelaskan pembiayaan Arrum Haji, menjelaskan apa saja kendala pembiayaan pada produk Arrum Haji, dan apa saja upaya PT.Pegadaian UPC (Unit Pengelola Cabang) Simpang Kawat dalam penyelesaian kendala tersebut. Penulis menggunakan metode kualitatif dan menggunakan data primer yaitu berupa wawancara dengan pihak Pegadaian UPC (Unit Pengelola Cabang) Simpang Kawat dan Nasabah Arrum Haji. Dari hasil penelitian ini dapat diketahui bahwa pembiayaan pada produk Arrum Haji ini telah berhasil dilaksanakan karena telah sesuai dengan yang dijalankan nasabah dikarenakan angsuran tiap bulan relatif murah dan harga terjangkau serta bertambahnya nasabah Arrum Haji setiap tahun nya dengan melalui pengikatan jaminan minimal 3,5 gram dengan angsuran maksimal 5 tahun sudah mendapat pinjaman berupa tabungan haji senilai Rp.25.000.000.
PERAN TANAH WAKAF DALAM MENINGKATKAN KESEJAHTERAAN PEREKONOMIAN DI MASYARAKAT KECAMATAN PULAU TEMIAN TEBO ULU Futri Yani; H. Sissah; Syahril Ahmad
JURNAL ILMIAH EKONOMI DAN MANAJEMEN Vol. 2 No. 7 (2024): JURNAL ILMIAH EKONOMI DAN MANAJEMEN (JIEM)
Publisher : CV. KAMPUS AKADEMIK PUBLISING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61722/jiem.v2i7.1944

Abstract

This thesis is entitled The Role of Waqf Land in Improving the Economic of the Temiang Island Community in Tebo Ulu. This research uses qualitative research methods. The types and sources of data needed are primary data and secondary data. Data collection techniques are carried out by means of observation, interviews and documentation, while data analysis methods include data collection, data reduction, data presentation and drawing conclusions. The results of this research show the role of Waqf Land in improving the economic welfare of the people of Temiang Island in Tebo Ulu, namely that many people depend on the income they get from trading in the market and most people fulfill their needs. From a spiritual aspect, it provides very positive results and the role of waqf land which is managed as an elementary school building becomes a forum for the local community to teach children and provide insight. The obstacles faced by the management of the role waqf are the lack of competent human resources and the status of the role waqf land does not yet have a certificate and there is a lack of ways to educate the people on Temiang Tebo Ulu Island. The solution that can be implemented is to increase human resources by providing training and guidance to the community and the management of the Nurul Ihksan Mosque and increasing socialization to the community regarding waqf both online and in person