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Effect of Light and Feed Restriction During Rearing on Production Performance of Egg Strain Layers
Ahsan-ul-haq, Ahsan-ul-haq,Ahmad, Nazir,Rasool, Shahid,Shah, T.H. Asian Australasian Association of Animal Productio 1997 Animal Bioscience Vol.10 No.6
432 Babcock ISA white leghorn pullets reared for 8 weeks on a standard managemental conditions were exposed to feed/nutrient and light restrictions from 9 to 20 weeks of age. Four feeding regimes i. e. 100, 85 or 70 percent of the recommended allowance and low energy (2,500 Kcal/kg) low protein (13% CP) ration were fed each in the three light regimes i. e. (A) Natural day light starting from 13.24 hr/day at 8 weeks of age and ending 10.41 hr/day at the end of 20 weeks; (B) Constant 11 hr/day light and (C) starting with 13 hr/day at 8 weeks and decreasing @ 20 min/week till 20 weeks of age. At the age of 20 weeks all the birds were shifted to separate cages under uniform lighting feeding and management. During the 21st week light was increased to 12 hr a day and thereafter with an increase of 30 min per week, increased to 16 hr a day at the age of 29 weeks. From 20 weeks onward till 72 week age, all the birds were offered commercial layer rations ad libitum, prepared according to climatic conditions. The results of the study revealed that birds reared under natural and constant light had higher weights than decreasing light, yet they could not out perform during production period. The effect of feed and nutrient restriction, on the other hand, was found significant during rearing as well as production period. The birds exposed to higher level of feed and those exposed to nutrient restriction were lighter in weight. The 100% fed birds laid their first egg at an early age. However, those reared on 85% of the recommendation excelled all other groups in terms of produced number of eggs, egg mass, hen housed and hen day production and net returns.
Ahsan Ullah,김기현,Jan Edward Szulejko,최달웅 한국대기환경학회 2017 Asian Journal of Atmospheric Environment (AJAE) Vol.11 No.1
For the quantitative analysis of volatile organic compounds (VOC), the use of a proper solvent is crucial to reduce the chance of biased results or effect of interference either in direct analysis by a gas chromatograph (GC) or with thermal desorption analysis due to matrix effects, e.g., the existence of a broad solvent peak tailing that overlaps early eluters. In this work, the relative performance of different solvents has been evaluated using standards containing 19 VOCs in three different solvents (methanol, pentane, and hexane). Comparison of the response factor of the detected VOCs confirms their means for methanol and hexane higher than that of pentane by 84% and 27%, respectively. In light of the solvent vapor pressure at the initial GC column temperature (35°C), the enhanced sensitivity in methanol suggests the potential role of solvent vapor expansion in the hot injector (split ON) which leads to solvent trapping on the column. In contrast, if the recurrent relationships between homologues were evaluated using an effective carbon number (ECN) additivity approach, the comparability assessed in terms of percent difference improved on the order of methanol (26.5%), hexane (6.73%), and pentane (5.24%). As such, the relative performance of GC can be affected considerably in the direct injection-based analysis of VOC due to the selection of solvent.
Wastewater from the textile industry: Review of the technologies for wastewater treatment and reuse
Ahsan Ali,Jamil Farrukh,Rashad Moeen Ali,Hussain Murid,Inayat Abrar,Akhter Parveen,Al-Muhtaseb Ala’a H.,Lin Kun-Yi Andrew,박영권 한국화학공학회 2023 Korean Journal of Chemical Engineering Vol.40 No.9
The textile industry is water intensive and discharges numerous coloring compounds into the water body that depend on the industry’s geographical location, the wet processes used for manufacturing, processing conditions, and the substrates involved. Textile wastewater contains chlorobenzenes, phthalates, heavy metals, azo dyes, and chlorophenols that have severe health issues, such as being allergenic, cytotoxic, genotoxic, mutagenic, and carcinogenic threats to living organisms. The differing concentrations of sulfates, chlorides, TOC, TDS, TSS, BOD, COD, high pH, and dye content characterize textile wastewater. To protect the environment and public health, a higher concentration of these items in textile wastewater is needed to treat the textile wastewater effluent before discharge. The conventional treatment methods are not able to fully remove the pollutants, such as physical treatments can only remove grease, oil, and TSS, whereas biological wastewater treatment (aerobic and anaerobic) can only decrease colors, COD, BOD, oil, and phenol with a higher accomplishment period and by-products. Therefore, it is necessary to develop effective ecofriendly, cost-effective, novel techniques, such as membrane technology, and a promising method with fewer by-products. The activated carbon method effectively removes heavy metals and dyes from the textile wastewater, and advanced oxidation processes (AOPs) are a recent development in textile wastewater treatment processes. Combining AOPs methods has been proven effective in removing pollutants when combined with biological and advanced physical processes. This paper reviews the textile manufacturing process, textile wastewater characteristics, textile wastewater’s impact on the environment and health, and the available textile wastewater treatment approach.
Re-opening the Bangladesh economy: search for a framework using a riskimportance space
Ahsan Senan,Md Oliur Rahman Tarek,Sajid Amit,Imran Rahman,Abdulla - Al Kafy 대한공간정보학회 2022 Spatial Information Research Vol.30 No.4
The novel coronavirus has infected more than 50 million people worldwide. Countries that have been on lockdown for more than three months have partially started to reopen their economies, including Bangladesh. This study aims to assess the reopening policies in Bangladesh by mapping the economic sectors in a risk-importance space and using that to develop a phased reopening strategy. This study conducted 100 expert interviews to identify sectors critical to the reopening of the economy and sectors that carry high transmission risks of the disease. The convenience sampling and snowball method were applied to reach the economic sector experts. Quadrant analysis was applied to classify sectors according to their importance to the economy and propensity to spread the disease. Pharmaceuticals and grocery have been identified as allowed sectors due to their contribution to the economy but pose relatively less risk of spreading COVID-19, whereas RMG and other exports identify as alert sectors. Based on findings, a sector-based, three-phase reopening strategy has been proposed for the economy that might prevent the spreading of COVID-19. The proposed framework can act as a guiding principle for any country to offer a step by step reopening strategy.
AHSAN ELAHI 장전수학회 2021 Proceedings of the Jangjeon mathematical society Vol.24 No.4
The crystal structures of anhydrous and solvated forms of 7-hydroxy-4 methyl coumarin have been analyzed on the basis of energies responsible for holding the moiety in a 3D pattern through weak intermolecular interactions. The lattice energy as well as intermolecular interaction energies of the stabilizing molecular pairs extracted from crystal packing for both structures have been evaluated using PIXEL method. The energies are further split into coulombic, dispersion, repulsion and polarization components, which facilitates in analyzing the stabilizing roles of weak interactions. Lattice energy calculations show that anhydrous form is more stable than hydrous form. Moreover, Hirshfeld surfaces and fingerprint plots were generated using Crystal Explorer 3.0. Critical analysis of Hirshfeld surfaces and fingerprint plots provides essential inputs about the differences in crystal packing of structures and associated intermolecular interactions.
( Ahsan Mansur ) 세종대학교 경제통합연구소 1989 Journal of Economic Integration Vol.4 No.1
This paper analyzes the financial policies pursued in the major industrial countries under the flexible exchange rate regime, and links misalignments in policies and their mixes to exchange rate variations among the major currencies. A number of indicators note that misalignments in fiscal policy led to a corresponding divergence of fiscal and monetary policy mix among the industrial countries. and, together. contributed to the rapid appreciation of the dollar during the early 1980s. The continued liberalization of international capital movements and the differences in the savings rate also amplified the effects of policy divergences and their mixes on the exchange rate movements.
Evaluation of Anti-venom effect of Tiryaq-e-arba in rabbit models
Ahsan, Mohd. Tarique,Rani, Seema Cellmed Orthocellular Medicine and Pharmaceutical 2020 셀메드 (CellMed) Vol.10 No.4
Background: Tiryaq-e-arba is a polyherbal Unani antidote/antivenom formulation used in the management of poisoning due to snake bite, scorpion bite as well as in cold poisons since time immemorial. Objectives: Tiryaq-e-arba was not evaluated scientifically before this study carried out, therefore it was studied for antivenom activity by testing on plasma fibrinogen level in Russell's Viper envenomation in rabbits. Material &Methods: The anti-venom activity of the test drug was studied by observing its effect on plasma fibrinogen level in Russell's Viper envenomation in rabbits by the method of Netelson. Results: The plasma fibrinogen level was found to be 171±665.04 mg/100 ml of blood, 36.18±1.12 mg/100 ml of blood, 33.14±0.52 mg/100 ml of blood and 17.9±1.65 mg/100 ml of blood at 0, 1, 3 and 6 hours respectively in control animals while in the test animal it was found to be 157.13±3.44 mg/100 ml of blood, 41.13±2.69 mg/100 ml of blood, 62.09±1.65 mg/100 ml of blood and 54.39±0.73 mg/100 ml of blood respectively. The test showed that though the plasma fibrinogen level in the test lower at 0 hour but it was greater in the control animals at 1, 3 and 6 hours. The increase in plasma fibrinogen level in the test animals at 3 and 6 hours was statistically significant (P<0.001). Conclusions: The finding of the present study was that Tiryaq-e-arba possesses antivenom activity which scientifically support the Unani claim that it is Dafe-Sumoom-al-Hevan (Antivenom or Antidote) and the use of this preparation in corresponding diseases.