동결에 따른 돼지정자첨체 ( 精子尖體 ) 의 미세변화

M . S . 아흐마드,김종욱,W . D . 킷츠 . R . R . 핫커,G . J . 킹 ( M . Sharif Ahmad,J . W . Kim,W . D . Kitts,R . R . Hacker,G . J . King ) 한국축산학회 1983 한국축산학회지 Vol.25 No.4

Split samples of boar semen were frozen when (a) sprinkled in liquid nitrogen, (b) placed in a glass tube and dropped into liquid nitrogen and (c) pelletted on dry ice. One hour frozen (a, b, c) samples and the control, a split sample of fresh semen (d), were fixed and used for electron microscopy. Qualitatively, the effect of freezing was so drastic to all the three treatments that even the nuclear membrane and perforatorium were damaged. Plasma membranes of almost all the treated cells were denuded. In more than 80% of the cells, the outer acrosomal membrane (OAM) was undulated or broken and the acrosomal vesicles (AV) showed localized or generalized vacuolations. These parameters were considered as a typical response or the acrosome against any method of quick freezing. A total of 3,299 cells, randomly distributed in the photomicrographic plates in sagittal, cross or oblique sections, was examined. In sagittal and cross sections of fresh semen the OAM were 81% smooth; and the AV showed 87% normal. However, due to rapid freezing the values of the OAM changed to 5-8% smooth, 66-76% undulated and 17-27% broken; and similarly the AV showed 7-15% normal, 60-72% localized and 22-25% generalized vacuoles. Further in the control sample-oblique sections, the OAM were 85% smooth and the AV were 83% normal. While after freeze-shock treatments the OAM were 3-6% smooth and 94-97% undulated or broken, Similarly, the values for AV were 14-36% normal and 64-86% vacuolated. Because of a very high incidence of the typical responses of accrosomes, the parametric evaluation of any of its two characters-e.g. alterations in the OAM or in the AV could be used as an index for evaluating freezability of boar spermatozoa.

Theoretical fabrication of Williamson nanoliquid over a stretchable surface

Sharif, Humaira,Hussain, Muzamal,Khadimallah, Mohamed Amine,Ayed, Hamdi,Taj, Muhammad,Bhutto, Javed Khan,Mahmoud, S.R.,Iqbal, Zafer,Ahmad, Shabbir,Tounsi, Abdelouahed Techno-Press 2022 Advances in concrete construction Vol.14 No.2

On the basis of fabrication, the utilization of nano material in numerous industrial and technological system, obtained the utmost significance in current decade. Therefore, the current investigation presents a theoretical disposition regarding the flow of electric conducting Williamson nanoliquid over a stretchable surface in the presence of the motile microorganism. The impact of thermal radiation and magnetic parameter are incorporated in the energy equation. The concentration field is modified by adding the influence of chemical reaction. Moreover, the splendid features of nanofluid are displayed by utilizing the thermophoresis and Brownian motion aspects. Compatible similarity transformation is imposed on the equations governing the problem to derive the dimensionless ordinary differential equations. The Homotopy analysis method has been implemented to find the analytic solution of the obtained differential equations. The implications of specific parameters on profiles of velocity, temperature, concentration and motile microorganism density are investigated graphically. Moreover, coefficient of skin friction, Nusselt number, Sherwood number and density of motile number are clarified in tabular forms. It is revealed that thermal radiation, thermophoresis and Brownian motion parameters are very effective for improvement of heat transfer. The reported investigation can be used in improving the heat transfer appliances and systems of solar energy.

The investigation of Magnetohydrodynamic nanofluid flow with Arrhenius energy activation

Sharif, Humaira,Khadimallah, Mohamed A.,Naeem, Muhammad Nawaz,Hussain, Muzamal,Mahmoud, S.R.,Al-Basyouni, K.S.,Tounsi, Abdelouahed Techno-Press 2021 Advances in nano research Vol.10 No.5

In this article, an analytically and numerically 3D nanoliquid flow by a porous rotatable disk is presented in the presence of gyrotactic microorganisms. The mathematical model in the form of partial differential system is transmuted into dimensionless form by utilizing the appropriate transformation. The homotopy analysis approach is applied to attain the analytic solution of the problem. The effect of promising parameters on velocity distribution, temperature profile, nanoparticles volume fraction and motile microorganism distribution field are evaluated through graphs and in tabular form. The existence of Brownian motion and thermophoresis impacts are more proficient for heat transfer enhancement. Further the unique features like heat absorption/generation and energy activation are also examined for the present flow problem. The obtained results are compared with the earliear investigation to check the accuracy of present model.

Nutritional Evaluation of Distillery Sludge and Its Effect as a Substitute of Canola Meal on Performance of Broiler Chickens

Sharif, M.,Shahzad, M.A.,Rehman, S.,Khan, S.,Ali, R.,Khan, M.L.,Khan, K. Asian Australasian Association of Animal Productio 2012 Animal Bioscience Vol.25 No.3

The study was conducted to investigate the chemical composition of distillery yeast sludge and its inclusion in broiler diets to replace canola meal. Raw distillery yeast sludge was washed with water using water and sludge in the ratio 6:1, respectively. Proximate analysis of raw distillery yeast sludge and washed distillery sludge was carried out for crude protein (CP), true protein (TP), ether extract (EE), ash, acid insoluble ash and nitrogen free extract (NFE) determination. Mineral contents and amino acid profile of raw distillery yeast sludge and washed distillery sludge were also determined. After chemical evaluation, four iso-caloric and iso-nitrogenous broiler starter and finisher diets were prepared in mash form using 0 (control), 4, 8 and 12% levels of washed distillery sludge replacing canola meal. One hundred and twenty day-old broiler chicks were randomly distributed into 12 experimental units in such a way that each diet was offered to three experimental units, each comprising of 10 chicks. It was observed that washing affected the nutrients either by decreasing or increasing their concentration. It decreased the total mineral contents whereas CP, TP, EE and NFE contents increased. Washing also increased amino acid profile. Average feed intake and weight gain were higher in birds fed diet containing 8% washed distillery sludge and lower in birds fed diet containing 0% washed distillery sludge. Feed cost per kg live weight gain decreased significantly as the level of washed distillery sludge was increased in the diet. Average heart, liver and pancreas weights decreased with increased level of washed distillery sludge in the diet. The study revealed that after washing, distillery yeast sludge can be used successfully in broiler diets up to the level of 8% without any adverse effect on broiler's performance.

Antimicrobial activity of endophytic fungi isolated from the mangrove plant Sonneratia apetala (Buch.-Ham) from the Sundarbans mangrove forest

Tauhidur R. Nurunnabi,Farah Sabrin,Dilara I. Sharif,Lutfun Nahar,Md. H. Sohrab,Satyajit D. Sarker,S.M. Mahbubur Rahman,Md. Morsaline Billah 경희대학교 융합한의과학연구소 2020 Oriental Pharmacy and Experimental Medicine Vol.20 No.3

Endophytic fungi reside in the intercellular space of plant nourished by the plant. In return, they provide bioactive molecules which can play critical roles on plant defense system. Fifty six endophytes were isolated from the leaves, root, bark and fruits of Sonneratia apetala, a pioneer mangrove plant in the Sundarbans, Bangladesh. A total of 56 isolates were obtained and 12 different species within 8 genera were identified using morphological and molecular characteristics. Antimicrobial activity of ethyl acetate (EtOAc) and methanolic (MeOH) extracts of these 12 different species were analyzed by resazurin assay and the minimum inhibitory concentrations (MICs) were determined. The fungal extracts showed antimicrobial activities against more than one tested bacterium or fungus among 5 human pathogenic microbes, i.e. Escherichia coli NCTC 12241, Staphylococcus aureus NCTC 12981, Micrococcus lutus NCTC 7508, Pseudomonas aeruginosa NCTC 7508 and Candida albicans ATCC 90028. Overall, methanolic extracts showed greater activity than that of ethyl acetate extracts. Of the isolates identified, Colletotrichum gloeosporioides, Aspergillus niger and Fusarium equiseti were the most active isolates and showed activity against microorganisms under investigation. Methanolic extracts of C. gloeosporioides and A. niger showed the lowest MIC (0.0024 mg/mL) against P. aeruginosa. The study indicates that endophytic fungi isolated from S. apetala species possess potential antimicrobial properties, which could be further investigated.

Efficient dye sensitized solar cell and supercapacitor using 1-ethyl 3-methyl imidazolium dicyanamide incorporated PVDF-HFP polymer matrix

Nawaz, A.,Sharif, R.,Rhee, H.W.,Singh, P.K. Korean Society of Industrial and Engineering Chemi 2016 Journal of industrial and engineering chemistry Vol.33 No.-

<P>Electrode and electrolytes are always playing a key role in developing good efficient devices. This paper reports the synthesis, characterization and application of low viscosity ionic liquid (1-ethyl 3-methyl imidazolium dicyanamide) incorporated into polymer matrix (PVDF-HFP). The samples were characterized using various experimental tools. Complex impedance spectroscopy shows that conductivity of polymer host increases with increasing ionic liquid (IL) concentration attains maxima and then decreases. Optical microscopy and scanning electron microscopy (SEM) reveals the reduction of crystalline matrix of polymer host by adding IL. The primarily fabricated devices using maximum conductivity film affirms that this material is promising candidate for dye sensitized solar cell (DSSC) and supercapacitor application. (C) 2015 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.</P>

Factors Influencing Animal Bites in Iran: A Descriptive Study

Rouhullah Dehghani,Alireza Sharif,Mahla Madani,Hamed H. Kashani,Mohammad R. Sharif 질병관리본부 2016 Osong Public Health and Research Persptectives Vol.7 No.4

Objectives: Animal bite is a significant health economic challenge worldwide. In Iran, there has been an increase in the number of animal bites in recent years. This study was performed to investigate the epidemiology of animal bites and their influencing factors in Semirom, Iran, from 2008 to 2012. Methods: This was a descriptive study conducted for 5 years. The data were based on the information sheets presented in health-care centers concerning how to combat against rabies caused by animal bites. The data obtained were classified and analyzed statistically. Results: During the 5-year study period, 1,246 animal bite cases were reported; 60% of the victims belonged to rural areas and the remaining 40% to urban areas. Among various aggressive animals, dogs had the highest rate of attacks (63.4%). The highest rate of animal bite (23.19%) was reported in the age group of 10-19 years and the lowest one (2.32%) was reported in the age group of 0-4 years. The animal bite rates among men and women were 76% and 24%; respectively. The highest and lowest rates were found among students (23.5%) and employees (5.5%), respectively. Regarding the commonly injured organ, the highest (67%) and lowest rates (23%) were for lower extremities and head and face, respectively. Regarding the nationality of the victims, 98% were Iranians and the rest were Afghan. Conclusion: Given the increasing number of animal bites reported, there is a need to implement strategies to prevent bite-related complications, which may have health and financial burden on the country. It is also necessary to increase awareness among target groups and to formulate preventive strategies with the help of various authorities to control animal bites.

Shooting method applied to porous rotating disk: Darcy-Forchheimer flow of nanofluid

Muzamal Hussain,Humaira Sharif,Mohamed A. Khadimallah,Abir Mouldi,Hassen Loukil,Mohamed R. Ali,Abdelouahed Tounsi Techno-Press 2023 Advances in nano research Vol.14 No.3

The characteristics of motile microorganism and three dimensional Darcy-Forchheimer nanofluid flow by a porous rotatable disk with heat generation/absorption is reported. Thermophoretic and Brownian motion aspects are included by utilizing Buongiorno model. Moreover, slip conditions are considered on velocity, thermal, concentration and microorganism. Shooting procedure is implemented to find the numerical results of physical quantities are evaluated parametrically. The different physical parameters like heat sink/source parameter, thermal, Brownian number, thermophoresis parameter, concentration, Peclet number, bioconvected Lewis number, microorganism on concentration and density of motile microorganism distributions is considered. Graphs of concentration and microorganism are plotted to examine the influence of distinct prominent flow parameters.

Nanostructured Iron Oxide Platform for Impedimetric Cholesterol Detection

Kaushik, Ajeet,Solanki, Pratima R.,Kaneto, Keiichi,Kim, C. G.,Ahmad, Sharif,Malhotra, Bansi D. WILEY-VCH Verlag 2010 Electroanalysis Vol.22 No.10

<P>A nanostructured iron oxide (NanoFe<SUB>3</SUB>O<SUB>4</SUB>, particle size ca. 25 nm and roughness ca. 21 nm) film deposited onto a hydrolyzed indium-tin-oxide (ITO) coated glass plate has been used to immobilize cholesterol oxidase (ChOx) to fabricate an impedimetric cholesterol sensor. Electrochemical studies reveal that surface charged Fe<SUB>3</SUB>O<SUB>4</SUB> nanoparticles provide better conformation for ChOx loading resulting in enhanced electron transfer between ChOx and the electrode. Impedimetric response studies of the ChOx/NanoFe<SUB>3</SUB>O<SUB>4</SUB>/ITO bioelectrode exhibit improved linearity (2.5–400 mg/dL), low detection limit (0.25 mg/dL), fast response time (25 s), high sensitivity (86 Ω/mg dL<SUP>−1</SUP>/cm<SUP>−2</SUP>) and a low value of the Michaelis-Menten constant (K<SUB>m</SUB>, 0.8 mg/dL) with a regression coefficient of 0.997.</P>

Effects of Partial Ringing and Organic Solvent Application to Ringed Portions on the Growth of Young Peach Trees

Justus M. Onguso,Fusao F. Mizutani,Ali R. El-Shereif,Sharif A. B. M. Hossain,Kipkoriony L. Rutto 한국원예학회 2006 한국원예학회 기타간행물 Vol.- No.-