Yurisman Yurisman
Program Doktor Bidang Keahlian Rekayasa Struktur, Fakultas Teknik Sipil dan Lingkungan Institut Teknologi Bandung / Staf Pengajar Politeknik Negeri Padang, Kampus Politeknik Limau Manis Padang

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PENGARUH KOMBINASI PENYUNTIKAN OVAPRIM DAN PGF2 α TERHADAP VOLUME SEMEN DAN KUALITAS SPERMA IKAN SELAIS (Ompok hypophthalmus) Putra, Ridwan Manda; Sukendi, Sukendi; Yurisman, Yurisman
Berkala Perikanan Terubuk Vol 39, No 2 (2011): Juli 2011
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (739.893 KB) | DOI: 10.31258/terubuk.39.2.%p

Abstract

This research aims to understand the effect of dosages combination ofmixed ovaprim and PGF2 α injection toward volume and quality of semen ofOmpok hypophthalmus. There were 5 treatments applied, namely A1 = 50 %ovaprim + 50 % PGF2 α/kg body weight (BW), A2 = 75 % ovaprim + 25 % PGF2α/kg BW, A3 = 25 % ovaprim + 75 % PGF2 α/kg BW, A4 = 100 % ovaprim /kgBW and A5 = 100 % PGF2 α / BW. The best combination of ovaprim and PGF2α for male fish was the A4= 100 % ovaprim (0,9 ml ovaprim/kg BW). Theaverage of semen volume produced was 0,87 ml, sperm concentration was 18,43x 10 9/ml, sperm viability was 88,67 % and sperm motility was 86,0 %.
DOMESTIKASI DAN PEMATANGAN GONAD IKAN TAPAH (Wallago sp) DARI PERAIRAN SUNGAI KAMPAR, RIAU Yurisman, Yurisman; Sukendi, Sukendi; Putra, Ridwan Manda
Berkala Perikanan Terubuk Vol 38, No 1 (2010): Februari 2010
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (667.11 KB) | DOI: 10.31258/terubuk.38.1.%p

Abstract

A study aims to find out a domestication and gonad maturationtechnique of Wallago sp captured in the Kampar River, Riau has benn conductedon May to Nopember 2009. Fish samples were kept in 1 x 2 x 1.5 m cages, 6fishes/cages. The fishes were treated with three types of food. Results shown thatWallago domestication can be conducted by rearing the fish for 4 weeks. Theproper food for the fishes are sinking pellet 888-S (4) (P3), floating pellet CPPP781 (P2), and floating pellet T 79 – 3P (PI). The total growth rate , total lengthand daily growth rate of treated fish are 647.77 gr; 9.3933 cm and 0.320 % for P3;426.67 gr; 6.8367 cm and 0.226 % for P2 and 353.34 gr; 6.00 cm and 0.1911 %for P1. However, there are only 1st and 2nd gonad maturity level obtained in thetreated fishes. Survival rate of the fishes in 100 %.
KEBERHASILAN PEMIJAHAN SEMI ALAMI IKAN SEPAT MUTIARA (Trichogaster leeri Blkr) DALAM MEMPRODUKSI BENIH Sukendi, Sukendi; Putra, Ridwan Manda; Yurisman, Yurisman
Berkala Perikanan Terubuk Vol 40, No 2 (2012): Juli 2012
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (163.482 KB) | DOI: 10.31258/terubuk.40.2.114-123

Abstract

This Research aims to determine the success of the semi-natural spawningin mosaic gouramy (Trichogaster leeri Blkr) by giving different substrates on thecontainer spawning. a pair of mosaic gouramy that have matured gonadscombined at the aquarium spawning that has been equiped with running watersystems. Treatments given were different substrates at the aquarium, P1 = thewater hyacinth substrate, P2 = hydrilla substrate, P3 = the smoothed rafia ropesubstrate. Each treatment carried out repeated three times to obtain 9 units trial.Parameters measured were spawning time, amount of eggs spawned, the value offertilization and egg hatchability values. The results showed that the besttreatment is the treatment P2 (hydrilla substrate) produces the shortest duringspawning time 49.33 hours, amount of eggs spawned 195 eggs, fertility value of71.93% and 60.09% egg hatchability.Keywords: Trichogaster leeri, spawning time, amount of eggs spawned, valueof fertilization and egg hatchability values
PENGARUH KOMBINASI PENYUNTIKAN OVAPRIM DAN PROSTAGLANDIN F2 α (PGF2 α) TERHADAP DAYA RANGSANG OVULASI DAN KUALITAS TELUR IKAN MOTAN (Thynnicthys thynnoides Blkr) Sukendi, Sukendi; Putra, Ridwan Manda; Yurisman, Yurisman
Berkala Perikanan Terubuk Vol 38, No 2 (2010): Juli 2010
Publisher : Fakultas Perikanan dan Kelautan, Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (685.17 KB) | DOI: 10.31258/terubuk.38.2.%p

Abstract

The experiment were conducted to study the effect of ovaprim danprostaglandin F2α (PGF2α) combination on inducing ovulation and egg quality ofThynnicthys thynnoides Blkr. The experiment used five treatments as following :A1 = 50 % ovaprim + 50 % PGF2 α (0.35 ml/kg of body weight + 1500 μg/kg ofbody weight), A2 = 75 % ovaprim + 25 % PGF2 α (0.525 ml/kg of body weight +750 μg/kg of body weight), A3 = 25 % ovaprim + 75 % PGF2 α (0.175 ml/kg ofbody weight + 2250 μg/kg of body weight, A4 = 100 % ovaprim (0.7 ml/kg ofbody weight) and A5 = 100 % PGF2 α (3000 μg/kg of body weight). Thetreatments affected on inducing ovulation and egg quality. The best results wereabtimes from treatment A1 (0.35 ml/kg of body weight + 1500 μg/kg of bodyweight) with average values : latent period of 6.08 hours, number of ovulated eggswere 16308, egg diameter defference of 0.23 mm and gonad maturationdefference of 20 %.
PENGARUH KOMBINASI PENYUNTIKAN OVAPRIM DAN PROSTAGLANDIN F 2 α (PGF 2 α) TERHADAP VOLUME SEMEN DAN KUALITAS SPERMATOZOA IKAN TAMBAKAN (Helostama temmincki CV) Sukendi, Sukendi; Putra, Ridwan Manda; Yurisman, Yurisman; Asiah, Nur
Jurnal Perikanan dan Kelautan Vol 16, No 02 (2011)
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (327.022 KB) | DOI: 10.31258/jpk.16.02.%p

Abstract

This research was aimed to know the effect of the best ovaprim andprostaglandin F2 α injection combination toward semen volume and spermatozoaquality of fish tambakan (Helostama temmincki CV). The result of this researchdemonstrated that the best injection combination was 50 % ovaprim + 50 % PGF2 (0,250 ml ovaprim + 1500 g PGF2  / kg of body), with a semen volume 1,10 ml,spermatozoa concentration 24.27x 10 9/ml, spermatozoa viability 87,23 % andspermatozoa motility 82,27 %)
Studi Numerik Usulan Jarak Pengaku Badan Diagonal Link Geser pada Struktur Baja Eccentrically Braced Frame Type–D Kurdi, Kurdi; Budiono, Bambang; Yurisman, Yurisman
Jurnal Teknik Sipil Vol 20, No 2 (2013)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (610.864 KB)

Abstract

Abstrak. Struktur portal baja Eccentrically Braced Frame type–D (EBF-D) dengan link geser berpengaku badan dimodelkan dalam penelitian ini menggunakan perangkat lunak MSC Nastran. Pembebanan diberikan secara monotonik dan siklik dengan kontrol perpindahan. Model struktur link geser berpengaku badan vertikal didesain dengan jarak pengaku sesuai dengan ketentuan AISC 2005. Model yang lain didesain menggunakan link geser berpengaku badan diagonal dengan jarak pengaku antara 30tw-d/5 sampai dengan panjang link (e) atau didesain tidak memenuhi syarat AISC 2005. Parameter  konfigurasi pengaku badan diagonal, jarak pengaku (a), panjang link (e), tebal badan link (tw), tebal sayap link (tf) dan tebal pengaku vertikal (tsv) maupun diagonal (tsd) diteliti dalam penelitian ini. Hasil penelitian menunjukkan kinerja struktur portal EBF-D link geser berpengaku badan diagonal lebih baik dibandingkan dengan berpengaku vertikal dari segi kekuatan, kekakuan,daktilitas maupun penyerapan energi dissipasi akibat beban gempa. Jarak optimal antara pengaku badan vertikal yang menggunakan pengaku diagonal diusulkan sebesar 1,6 (30tw-d/5) dengan ketebalan minimum pengaku badan diagonal 5,5 mm atau sama dengan tebal badan dan 8 mm untuk tebal minimum pengaku vertikal. Abstract. Eccentrically braced frame type-D (EBF-D) of steel structure with shear link web stiffener is modeled in this study using MSC Nastran software. The monotonic and cyclic loading is given under the displacement control. The shear link structure model with the vertical web stiffeners are designed with the spacing accordance to the provisions of AISC 2005. Other model is designed with shear link web stiffener diagonal with spacing between 30tw-d/5 to length of link (e) or designed ineligible to AISC 2005. The parameters of EBF-D with web stiffeners will be meansured to : configuration of the web stiffeners, the space of stiffener (a), length of the link (e), thickness of web link (tw), thickness of flange link (tf) and the thickness vertical web stiffeners (tsv) and diagonal (tsd). The results show that the performance of the portal structure of EBF-D shear link diagonal of web stiffener is better than vertical web stiffener both in terms of strength, stiffness, ductility and the absorption of energy dissipation due to earthquake loads. Optimal space between vertical web stiffeners using diagonal web stiffener is 1.6 by (30tw-d/5) with minimumthickness of diagonal web stiffener is 5.5 mm or equal which thickness web link and thickness minimum vertical web stiffeners is 8 mm.
Studi Eksperimental terhadap Parameter Daktilitas Struktur Baja Yurisman, Yurisman; Moestopo, Muslinang
Jurnal Teknik Sipil Vol 10, No 4 (2003)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (322.802 KB)

Abstract

Abstrak. Makalah ini menyajikan studi eksperimental terhadap daktilitas struktur baja berupa portal sederhana dengan tujuan meneliti parameter-parameter yang berpengaruh terhadap daktilitas struktur baja, dan melakukan validasi terhadap usulan formula daktilitas struktur yang sedang dikembangkan melalui studi numerik. Sebelum dilakukan pengujian di Laboratorium terlebih dahulu dilakukan penelusuran teori-teori serta data-data dari hasil-hasil penelitian sebelumnya. Selanjutnya dilakukan simulasi komputer dengan menggunakan paket program analisis nonlinier MSC/NASTRAN untuk mengetahui parameter-parameter yang berpengaruh secara signifikan terhadap daktilitas struktur portal baja sederhana. Hasil penelitian menunjukkan bahwa properti penampang (bf/2tf, h/bf), perbandingan tinggi kolom struktur dengan tinggi profil (H/h), serta tinggi kolom dengan lebar bentang struktur (H/L) merupakan parameter yang sangat berpengaruh terhadap nilai daktilitas. Validasi terhadap formula daktilitas yang diusulkan melalui studi numerik menunjukkan bahwa hasil numerik lebih bersifat konservatif, namun hasil analisis numerik dan eksperimen menunjukkan pola kurva daktilitas yang sama.Abstract. This paper presents experimental study of ductility parametric of steel structure. The purpose of this research to investigate the parametric influencing ductility of steel structure and to validate ductility formula obtained from numerical study. For this purpose, experimental data and modeling of specimen obtained from previous study and through simulation by nonlinear program MSC/NASTRAN. The result of investigation shows that: behavior of cross section (bf/2tf, h/bf), ratio height and width of structure (H/L) have great influence on the available ductility of steel structure. Validation of ductility formula show that the ductility the ductility value by experimental study is higher than numerical study, but the curve of ductility ratio shows the same behavior between experimental and numerical result.
Kajian Numerik Terhadap Kinerja Link Geser dengan Pengaku Diagonal pada Struktur Rangka Baja Berpenopang Eksentrik (EBF) Yurisman, Yurisman; Budiono, Bambang; Moestopo, Muslinang; Suarjana, Made
Jurnal Teknik Sipil Vol 17, No 1 (2010)
Publisher : Institut Teknologi Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (929.264 KB)

Abstract

Abstrak. Makalah ini menyajikan hasil studi numerik yang meneliti perilaku link geser dengan menggunakan pengaku diagonal pada bagian badan untuk meningkatkan kinerjanya, pada sistem struktur baja berpengaku eksentrik (EBF). Penelitian ini bertujuan untuk meneliti perilaku link geser dengan menggunakan pengaku diagonal pada bagian badan dibawah pembebanan statik monotonik dan siklik dengan kontrol perpindahan, riwayat pembebanan yang diberikan dalam pengujian ini sesuai dengan standar pembebanan AISC 2005. Analisis dilakukan dengan pendekatan elemen hingga Non-Linier dengan menggunakan perangkat lunak komputer MSC/NASTRAN. Link dimodelkan sebagai elemen shell yang ditumpu pada kedua ujungnya sedangkan beberapa nodal pada posisi pembebanan diperbolehkan untuk bertranslasi dalam satu arah saja (sumbu-y).. Beberapa parameter penting yang dianggap berpengaruh secara signifikan terhadap kinerja link geser telah dianalisa mencakup: tebal sayap, tebal badan, tebal dan jarak pengaku badan, tebal pengaku diagonal dan geometrik pengaku diagonal. Perilaku link geser dengan pengaku diagonal badan dibandingkan dengan perilaku link standar yang direncanakan sesuai dengan ketentuan AISC 2005. Hasil analisis menunjukkan bahwa pengaku diagonal badan dapat meningkatkan kinerja link geser dalam hal: kekuatan kekakuan dan dissipasi energi dalam menahan beban lateral. Namun, perbedaan nilai daktilitas antara link geser dengan pengaku diagonal badan dan link geser yang direncanakan sesuai standar AISC tidak begitu signifikan. Hasil analisis juga menunjukkan bahwa ketebalan pengaku diagonal dan model geometrik pengaku tersebut berpengaruh secara signifikan terhadap kinerja link geser. Abstract. This paper presents a numerical study to investigate the behaviour of shear link in case of enhancement of the shear link performance of Eccentrically Braced Frames (EBF) of steel structures by using diagonal web stiffenner. This research aims to investigate the behaviour of shear link with diagonal stiffenner under monotonic and cyclic of loading with displacement control, the loading hystory is applied to the model of link accordance with standard of AISC 2005. Non-Linier Finite Element Method is applied using the computer software of MSC/NASTRAN. Link is modeled as shell element and fixed at its both ends except for degree of freedom of the vertical displacement (y-direction) at the one end where the load is applied. Several important parameters of shear link has ben investigated: the thickness of flange, web and web stiffener, the space of web stiffner, the thickness of diagonal web stiffner and its geometric. The behaviour of shear link with diagonal  web stiffener is compared to the behaviour of the link designed in accordance with the AISC 2005 Standard Code of Practice. The results of the analysis show that the diagonal web stiffener increases the performance of the shear link in terms of strength, stiffness, energy dissipation to resist lateral load. However, the difference between the ductilities of the link with diagonal web stiffenner and standard link of AISC Code is not significant. Parameters which are significantly influencing the performance of the shear link are the thickness of diagonal web stiffener and its geometry.
Analisis Variabel-Variabel Risiko pada Pelaksanaan Proyek Konstruksi Jalan Hidayati, Rahmi; Natalia, Monika; Adibroto, Fauna; Mafriyal, Mafriyal; yurisman, yurisman; Saskia, Rizkina
Jurnal Ilmiah Rekayasa Sipil Vol 14 No 2 (2017): Edisi Oktober 2017
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (337.549 KB) | DOI: 10.30630/jirs.14.2.106

Abstract

This research aims to identify the risk variables that ever occurred while executing of road construction project. In addition, it is to identify how significant and how big the influence of risk variables to the articulation of project execution processes of a road construction project, based on questionnaire that distributed to 30 questionnaires who are project managers and site managers on contractors of road construction project.  From the research data, there were identified 14 risk variables with 84 risk sub-variables on execution of road construction project. Those 14 risk variables were natural, social, politic, economic, law, occupational safety and health, managerial, technical, cultural, logistic, condition around construction site, design and technology, labor, and contractual variables. From the data analysis by using SPSS version 16, obtained there were 14 risk sub-variables which became the most influential sub-variables (indicators) to the road construction project. All sub-variables on the questionnaire are valid and reliable. The results of this research is expected to be considered for all parties involved in the construction project to pay more attention to risk variables during the execution of road construction project.
KAJIAN NUMERIK JARAK PENGAKU BADAN DIAGONAL LINK GESER PADA STRUKTUR BAJA ECCENTRICALLY BRACED FRAME TYPE–D Kurdi, Kurdi; Budiono, Bambang; Yurisman, Yurisman
JURNAL TEKNIK SIPIL Vol 2, No 2 (2013): Volume 2, Nomor 2, januari 2013
Publisher : Jurusan Teknik Sipil, Fakultas Teknik, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (114.28 KB)

Abstract

Abstract: Eccentrically braced frame type-D (EBF-D) of steel structure  with shear link web stiffener is modeled in this study using MSC Nastran software. The monotonic and cyclic loading will be given under the displacement control. The shear link structure model with the vertical web stiffeners are designed with the spacing accordance to the provisions of AISC 2005. Other model is designed with shear  link web stiffener diagonal with spacing  between 30tw-d/5 to length of link (e) or designed ineligible to AISC 2005. The parameters of EBF-D with web stiffeners will be meansured to : configuration of the web stiffeners, the space of stiffener (a),  length of the link (e), thickness of web link (tw), thickness of flange link (tf) and the thickness vertical web stiffeners (tsv) and diagonal (tsd). The results show that the performance of the portal structure of EBF-D shear link diagonal of web stiffener is  better than vertical web stiffener both in terms of strength, stiffness, ductility and the absorption of energy dissipation due to earthquake loads. Optimal space between vertical web stiffeners using  diagonal  web stiffener is 1.6 by (30tw-d/5) with  minimum thickness of diagonal web stiffener is 5.5 mm or equal which thickness  web  link and thickness minimum  vertical web stiffeners is 8 mm.Keywords : : eccentrically braced frame type-D (EBF-D), shear link, monotonic loading, cyclic loading, diagonal web stiffener , vertical web stiffeners, strength, stiffness, ductility and energy of dissipations.Abstrak: Struktur portal baja Eccentrically Braced Frame type–D (EBF-D) dengan link geser berpengaku badan dimodelkan  dalam penelitian ini menggunakan perangkat lunak  MSC Nastran. Pembebanan diberikan secara monotonik dan siklik dengan kontrol perpindahan.  Model struktur link geser berpengaku badan vertikal didesain dengan jarak pengaku sesuai dengan ketentuan AISC 2005.  Model yang lain didesain menggunakan link geser berpengaku badan diagonal dengan jarak pengaku antara 30tw-d/5 sampai dengan panjang link (e) atau didesain tidak memenuhi syarat AISC 2005. Parameter konfigurasi pengaku badan diagonal, jarak pengaku (a), panjang link (e), tebal badan link (tw), tebal sayap link (tf) dan  tebal pengaku vertikal (tsv) maupun diagonal (tsd) diteliti dalam penelitian ini. Hasil penelitian menunjukkan kinerja struktur portal EBF-D link geser berpengaku badan diagonal lebih baik dibandingkan dengan berpengaku vertikal dari segi kekuatan, kekakuan, daktilitas maupun penyerapan energi dissipasi akibat beban gempa. Jarak optimal antara pengaku badan vertikal yang menggunakan pengaku diagonal diusulkan sebesar 1,6 (30tw-d/5) dengan ketebalan minimum pengaku badan diagonal 5,5 mm atau sama dengan tebal badan dan 8 mm untuk tebal minimum pengaku vertikal.Kata kunci : Eccentrically Braced Frame type–D (EBF-D), link geser, beban monotonik, beban siklik, pengaku badan diagonal, pengaku badan vertikal, kekuatan, kekakuan, daktilitas dan energi dissipasi.