cover
Article Per Year (5 Year)
All
Home Page
OAI Link
Editorial Team
Contact
Reviewer
Google Scholar
Contact Name
-
Contact Email
-
Phone
-
Journal Mail Official
-
Editorial Address
-
Location
Kab. sleman,
Daerah istimewa yogyakarta
INDONESIA
Jurnal Penelitian Saintek
Published by Universitas Negeri Yogyakarta
ISSN : 14123991     EISSN : 25287036     DOI : 10.21831
Core Subject : Science,
Decision Sciences, Operations Research & Management
Arjuna Subject : -
Articles 5 Documents
 1 
Search results for , issue "Vol 8, No 2: Oktober 2003" : 5 Documents clear
TEMPERATURE MEASUREMENT COMPUTATIONS IN SURFACE SURFACE WITH DIFFERENT METHODS Masduki Zakarijah
Jurnal Penelitian Saintek Vol 8, No 2: Oktober 2003
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7278.426 KB) | DOI: 10.21831/jps.v8i2.5480

Abstract

This research goal  to heat  transfer rate prediction  on  every node  insurface  line  and  the  difference  of  temperature  measurement  between direct measurement and numerical analysis based on Matlab with finite difference technique. Object of this research is aluminium plate to take shape a plaid square with size 5 x 22 em to divided in 75 node. The result of this research is heat transfer rate on every node in surface line between direct  measurement  and  numerical   analysis   based   on  Matlab  not difference of significance.
DIFFERENCE OF VITAMIN C CONTENT IN PICKLED MANGO FRUIT Sri Palupi
Jurnal Penelitian Saintek Vol 8, No 2: Oktober 2003
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (15099.241 KB) | DOI: 10.21831/jps.v8i2.5429

Abstract

his research is a survey one which aims at knowing the content of vitamin C of salted mangoes and knowing existances or non-extances of the content of vitamin C of salted mangoes in Jogjakarta Special Region (DIY). Knowing existances or nonextances of the differences of the content of vitamin C of salted mangoes the supply of vitamin C will -be known so  that the  need  of vitamin  C for  someone  can  be considered as references.  The samples  are salted  mangoes sold  at Mirota Kampus, Gardena and Ramai shop. These shops only sell them every  sample  was  analyzed  to find   out  its  water  and  vitamin  C contents using "titrasi yodium"  with four  time repetitions. These data then was analyzed statistically using two ways of variant analysis. The summary of this research shows that the content of vitamin C every lOO-grama salted mango driedfrom  Mirota Kampus has 0,141 gram, Gardena has 0,094 gram. There significant differences of the content of vitamin C of the salted mangoes from the 3 shops. A Null hypothesis (Ho) accepts, p    0,05. It is  suggested  that people  buys the salted mangoes  at Mirota Kampus shop  because  its vitamin  C content is higher.
MECHANISM OF LANTANUM METAL TRANSPORT IN MEMBRAN LIQUID WITH CARRIER SENYA WA MACROSIKLIS Suyanta Suyanta
Jurnal Penelitian Saintek Vol 8, No 2: Oktober 2003
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (6003.843 KB) | DOI: 10.21831/jps.v8i2.5560

Abstract

The transport mechanism of lanthanum element in the supported liquidmembrane with macrocycle compound Di benzo IB crowns 6 carriers was studied.  These transport are two kinds. that is  chemical transport and potential   transport.   The  chemical  transport  is   done  with  two  cell compartment   (feed   compartment   and   stripping   compartment).  and separate with membrane that prepare with DiBenzoIBCrown6. Poly Vinyl Chloride. Di  Octyl Ptalate, Sodium  tetra butyl borate  in  Tetra hydro furan solution. A 150 mL solution of La3+   JO-3  Min feed  cell stirrer with300 rpm speed along 3 hour. The stripping phase is solution that varied the pH from  1 to B. The same way. then solution in the feed cell is varied from  10-1  M to 5.10-4  M. The potential  transport is measured with the relative  same  cell.  The potential   transport  measure  with  two  kind reference electrode. Ag/AgCI reference  electrode in the inner cell and calomel reference electrode in the outer cell. Inner cell is contain mixture solution KCL 10-3 M and La3+    IO-3 M and outer cell is contain solution La3"   that variedfrom  10-8 to JO-J  M. The chemical transport is effective at low pH  (below pH  4) and high pH  (upper pH  6). It is good way for separation of La3'.     The transport ion La3+    is low at pH 4 -  6. It is good areafor applied as sensor membrane electrode that has minimal diffusion potential.  The system has good  correlation in potential  membrane that gives slope value 19.36 as Nernst coefficient.
EFFECT OF WOOD-LOAD WOOD-LOADING PROCEDURES (Manihot esculenta Crantz) ON PADI CONTENT AND QUALITY OF UVAN WOOD FLOUR Wika Rinawati
Jurnal Penelitian Saintek Vol 8, No 2: Oktober 2003
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7549.569 KB) | DOI: 10.21831/jps.v8i2.5475

Abstract

This research is about flouring procedures,  which do with three ways.First  (grating  and  drying).  Second  (grating,  parting   of  starch  and waster). Third (grating and drying of waster). Goals from  this research are: 1) to know cassava's flour  starch  based on difference of flouring procedure 1, II,  and 111,2)  to know about impact of flouring procedure difference 1, 11,   and 111on cassava's flour  starch  compared with fresh cassava, and 3) to know the impact of flouring procedure difference 1, 11 and 111on quality (colour and smell) cassava's flour.  Research were did at  Food   Biochemical  Laboratory   Farm   Technology  Gadjah   Mada University  to  analyze flour   and  Culinary  Laboratory,  Family  Life Education, Technique Faculty, Yogyakarta State University, where flour product  was made. Research start  with make  a starch  with starching procedure  1, 11,    and  111 and  continued  with  analyzing  cassava  and sensoric test of cassava's flour quality which depend on colour and smell. The research show that: 1) cassava's flour  starch in 1 way 86.69%, 11is87.94%,  111 is  87.I4%.  2)  there  is  impact  of flouring  procedure  on cassava's flour starch compared with fresh starch. There is no difference impact offlouring procedure 1, II, and IlIon  cassava's starch flour at 1% significantly.  3)  There is  impact on flouring  procedure   difference  on colour and smell cassava's flour at 1% significantly.
AIR FLOW VISUALIZATION AROUND THE FLIGHT FLIGHT WINGS Yosaphat Sumardi
Jurnal Penelitian Saintek Vol 8, No 2: Oktober 2003
Publisher : Institute of Research and Community Services, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (7598.165 KB) | DOI: 10.21831/jps.v8i2.5554

Abstract

This research is performed with objectives: (I) to show the patterns of velocity field  contour of airflow around the wings of subsonic plane, (2) to show factors  that influence these patterns,  and (3)  to explain their application in flight  engineering. The patterns  of velocity field contour  of  airflow  are  visualized  by  using  numerical  method  in Femlab software. Varying the velocity of airflow, the angle of attack, and the cross section form  of wings shows the visualization of these patterns.  The results of research show that the patterns  of velocity field  contour of airflow around the wings of subsonic plane may be circulation form.  Factors that influence these patterns of contour are the velocity of airflow, the attack angle of wings, and the cross section form  of wings. These three factors  determine lift coefficient and dragcoefficient.  In  commercial flight   it  is  used  airfoil  wings  that  areequipped by rear flaps on the trail edge of wings. These rear flaps canbe lowered of raised to adjust the cross section of airfoil. The slotsetting in the leading edge of wings can reduce the drag coefficient.Accordingly.fuel  efficiency andflight safety can be controlled.

Page 1 of 1 | Total Record : 5

 1 

Filter by Year

2003 2003


Reset
Filter By Issues
All Issue Vol 30, No 2 (2025) Vol 30, No 1 (2025) Vol 29, No 2 (2024) Vol 29, No 1 (2024) Vol 28, No 2 (2023) Vol 28, No 1 (2023) Vol 27, No 2 (2022) Vol 27, No 1 (2022) Vol 26, No 2 (2021) Vol 26, No 1 (2021) Vol 25, No 2 (2020) Vol 25, No 1 (2020) Vol 24, No 2: Oktober 2019 Vol 24, No 1: April 2019 Vol 23, No 1 (2018): April 2018 Vol 23, No 2: Oktober 2018 Vol 22, No 2: Oktober 2017 Vol 22, No 1: April 2017 Vol 21, No 2: Oktober 2016 Vol 21, No 1: April 2016 Vol 20, No 2: Oktober 2015 Vol 20, No 1: April 2015 Vol 19, No 2: Oktober 2014 Vol 19, No 1: April 2014 Vol 18, No 2: Oktober 2013 Vol 18, No 1: April 2013 Vol 17, No 1: April 2012 Vol 16, No 2: Oktober 2011 Vol 16, No 1: April 2011 Vol 15, No 2: Oktober 2010 Vol 15, No 1: April 2010 Vol 14, No 1: April 2009 Vol 13, No 1: April 2008 Vol 12, No 2: Oktober 2007 Vol 12, No 1: April 2007 Vol 11, No 1: April 2006 Vol 10, No 2: Oktober 2005 Vol 10, No 1: April 2005 Vol 9, No 1: April 2004 Vol 8, No 2: Oktober 2003 Vol 8, No 1: April 2003 Vol 7, No 2: Oktober 2002 Vol 7, No 1: April 2002 Vol 6, No 1: Saintek 2001 More Issue