EXPERIMENTAL STUDY ON MODEL OF NEGATIVE CONTROL OF HYDRAULIC SYSTEM

2005 ◽  
Vol 41 (07) ◽  
pp. 107 ◽  
Author(s):  
Feng Gao
Keyword(s):  
Experimental Study ◽  
Hydraulic System ◽  
Negative Control

Reduction of liver enzyme ALT by berberis lycium in acetaminophen induced hepatic damage in mice liver.

2021 ◽  
Vol 28 (03) ◽  
pp. 287-292
Author(s):  
Furqan Ali Shah ◽  
Sabeen Shakir ◽  
Saima Rafique ◽  
Ambar Shuaib
Keyword(s):  
Experimental Study ◽  
Liver Enzyme ◽  
Plant Extract ◽  
Negative Control Group ◽  
Negative Control ◽  
Control Group ◽  
Drug Induced ◽  
Medical College ◽  
Herbal Plant ◽  
Berberis Lycium

Objective: The objective of this research was to study the effect of Berberis lyceum (herbal plant) in reduction of liver enzyme ALT in mice. Study Design: Quasi- experimental Study. Setting: Peshawar Medical College, Peshawar. Period: December, 2016 to May, 2017. Materials & Methods: It was an experimental study which was carried out at Peshawar Medical College Warsak Road Peshawar. Total 30 (thirty) mice were used divided in six different groups with five mice in each group. After inducing hepatotoxicity with acetaminophen in the mice, blood samples were taken and LFTs were performed to observe serum ALT values and the effects of different doses of the plant extract were evaluated. Results: The ALT levels of negative control and experimental group were compared and it was shown that ALT levels in experimental groups were 232±42.3, 143±32.5 and 62.2±18.2 whereas serum ALT value of negative control group was 571.4±123.3 which showed that ALT had been decreased by increasing the dose of plant extract. Conclusion: It was concluded that Berberis Lycium, a herbal plant has a potentially active hepato protective role in bringing serum ALT to normal. This plant can be useful in reversing the hepatotoxicity in drug induced elevation of liver enzyme ALT.

scholarly journals Experimental Study of a Small Scale Hydraulic System for Mechanical Wind Energy Conversion into Heat

2016 ◽  
Vol 8 (7) ◽  
pp. 637 ◽  
Author(s):  
Tadas Zdankus ◽  
Jurgita Cerneckiene ◽  
Andrius Jurelionis ◽  
Juozas Vaiciunas
Keyword(s):  
Experimental Study ◽  
Wind Energy ◽  
Energy Conversion ◽  
Hydraulic System ◽  
Small Scale ◽  
Wind Energy Conversion

UJI EFEKTIVITAS ANTHELMINTIK EKSTRAK RIMPANG BANGLE (Zingiber purpureum Roxb.) TERHADAP CACING Ascaridia galli SECARA IN VITRO

2017 ◽  
Vol 1 (2) ◽  
pp. 187
Author(s):  
Yanthi Susanti ◽  
Indri Astuti ◽  
Ade Ari Dwi Astuti
Keyword(s):  
Experimental Study ◽  
Data Analysis ◽  
Positive Control ◽  
Negative Control ◽  
Probit Analysis ◽  
Ascaridia Galli ◽  
Experimental Animals ◽  
Anthelmintic Efficacy ◽  
Pyrantel Pamoate

The research was conducted to observe anthelmintic efficacy on rhizome extract bangle against Ascaridia galli by in vitro procedure. Experimental study was conducted, with samples rhizomes bangle powder and  maceration method in three concentrations of 2%, 4% and 8%. The experimental animals used is Ascaridia galli with NaCl 0.9% as negative control and a pyrantel pamoate suspension as positive control with concentrations of 0.2%, 0.4% and 0.6%. The study was conducted in July 2014 at the Laboratory on IKIFA Academy of Pharmacy. The data analysis used is a probit analysis. Results of Research was rhizome extract bangle (Zingiber purpureum Roxb.) having as anthelmintic efficacy against Ascaridia galli with LC50 2.29% and LT50 in 4 hours 3 minutes 18 seconds

Mechanical design method for operability based on modeling of hydraulic system and experimental study of operation mechanisms

2021 ◽  
Vol 2021.59 (0) ◽  
pp. 04c3
Author(s):  
Shintaro Tanaka ◽  
友宏 深谷 ◽  
弘貴 山口 ◽  
文哉 佐藤 ◽  
Md Issa Nurhayati ◽  
...  
Keyword(s):  
Experimental Study ◽  
Hydraulic System ◽  
Mechanical Design ◽  
Design Method

Experimental Study on the Dynamic Characteristics of Hydro-Magneto-Electric-Regenerative Shock Absorber

2016 ◽  
Vol 836 ◽  
pp. 9-13
Author(s):  
Harus Laksana Guntur ◽  
Wiwiek Hendrowati
Keyword(s):  
Experimental Study ◽  
Dynamic Characteristics ◽  
Hydraulic System ◽  
Shock Absorber ◽  
Excitation Frequency ◽  
Vehicle Suspension ◽  
Test Rig ◽  
Electric Generator ◽  
Car Suspension ◽  
Regenerative Shock Absorber

Regenerative shock absorber is designed to convert the vibration energy losses from the vehicle suspension into electricity. This paper presents an experimental study on the dynamic characteristics of hydro-magneto-electric-regenerative shock absorber (HMERSA). Study was carried out by developing a prototype of HMERSA and testing its dynamic characteristics. The results were analyzed and discussed. Prototype of the HMERSA consists of hydraulic system and electric generator. The HMERSA was tested using a quarter car suspension test rig with input displacement in various frequency (1.3Hz, 1.5Hz, 1.7Hz) and for HMERSA’s various oil viscousity (ISO VG 10, 32, 46). Sprung mass acceleration and the generated electric power representing the dynamic characteristics of HMERSA were measured. Maximum power 2.5 watt and root mean square acceleration 0.172 m/s2 gained for HMERSA with oil viscousity ISO VG 10 at all excitation frequency.

scholarly journals LAXATIVE EFFECT OF GREEN GEDI LEAVES INFUSES (Abelmoschus manihot (L.) Medik) ON MALE WHITE MICE (Mus musculus)

2019 ◽  
Vol 19 (2) ◽  
Author(s):  
Birgitta Vania Rarasati
Keyword(s):  
Experimental Study ◽  
Mus Musculus ◽  
Positive Control ◽  
Negative Control ◽  
P Value ◽  
Laxative Effect ◽  
Significant Difference ◽  
Group 5 ◽  
Group 2

Abstract. Background: Gedi plant (Abelmoschus manihot (L.) Medik) of the Malvaceae family is a plant which leaf is used by peoples for the treatment of several illnesses such as constipation. Purpose: To investigate the laxative activity of green gedi leaves infuses (Abelmoschus manihot (L.) Medik) on male white mice.Method: This study is an experimental study. Mice were divided in 5 groups of 6 animals each, first group as negative control (CMC Na 0.5%) while group 2, 3 and 4 were treated with green gedi leaves infuses (Abelmoschus manihot (L.) Medik) at doses of 130, 260 and 520 mg/kgBW, per as respectively and group 5 as positive control (bisacodyl). The laxative activity was determined based on the frequency of defecation, weight of feces and consistency of feces.Results: It is found that 520 mg/kgBW dose has the highest mean of defecating frequency (7.17) and 260 mg/kgBW dose has the highest mean of feces weight (0.20). Statically however, there is no significant difference between the groups overall with p value of 0.132 and 0.246 for defecating frequency and feces weight respectively. There is no difference between the groups in term of feces consistency with both not defecating and hard feces.Conclusion: The research concludes that there is no significant laxative activity between each groups after administration of several dosages in 6 hours on mice thus the use of green gedi leaves as laxative in society can not be proven empirically in the laboratory.Keywords: gedi leaf, Abelmoschus manihot (L.) Medik, laxative effect, constipation

scholarly journals Experimental study of hydraulic equipment operation process

2021 ◽  
Vol 264 ◽  
pp. 02026
Author(s):  
Kamoliddin Rustamov ◽  
Samandar Komilov ◽  
Mavlon Kudaybergenov ◽  
Shamshir Shermatov ◽  
Shahzod Xudoyqulov
Keyword(s):  
Experimental Study ◽  
Experimental Research ◽  
Hydraulic System ◽  
Theoretical Work ◽  
Working Fluid ◽  
Hydraulic Systems ◽  
Equipment Operation ◽  
Operation Process ◽  
Hydraulic Equipment ◽  
The Impact

Relevance. When the hydraulic fluid is operated for several cycles, the impact on hydraulic performance and longevity is greatly increased. So, there are several ways to fix this problem. To increase the efficiency of the hydraulic system, it is necessary to study the working processes, the hydraulic systems of the quick-change equipment of the machine with a lawn of the kshp are made as a whole, and the equipment of the machine is attached to the suspension device. The complexity of these processes lies in the fact that they allow experimental research and verification of results using mathematical models. Aim. The purpose of the experimental study in this dissertation is to study the effect of forces acting on the hydraulic system when excavating the hydraulic system of a multipurpose machine and substantiate the parameters by assessing power use efficiency. Methods. Checking the suitability of the working fluid during earthworks, as well as the mathematical model. In this case, we studied the hydraulic system of a single-bucket excavator, the device of quick-change equipment for a universal machine. Results. The theoretical work performed has been verified and the confirmation of the operation of a multipurpose machine designed with earth and dozer equipment. The installation of equipment based on TTZ-80 made it possible to carry out experimental research with the most energy-intensive workflow, determining energy efficiency indicators for excavation and leveling. Conclusion. Comprehensive tests made it possible to conclude that the characteristics of the developed design and the characteristics of the engine of the base machine - the TTZ-80.10 - KM-1 tractor, overcome the resistance encountered during technological operations of a multipurpose machine.

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