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Shahzad, F.,Abdullah, M.,Chaudhry, A.S.,Bhatti, J.A.,Jabbar, M.A.,Ahmed, F.,Mehmood, T.,Asim, M.,Ahmed, S.,Kamran, Z.,Irshad, I.,Tahir, M.N. Asian Australasian Association of Animal Productio 2016 Animal Bioscience Vol.29 No.3
The study was carried out to explore the effects of replacing wheat straw with fungal treated wheat straw as an ingredient of total mixed ration (TMR) on the growth performance and nutrient digestibility in Nili Ravi buffalo male calves. Fungal treated wheat straw was prepared using Arachniotus sp. Four TMRs were formulated where wheat straw was replaced with 0 (TMR1), 33 (TMR2), 67 (TMR3), and 100% (TMR4) fungal treated wheat straw in TMR. All TMRs were iso-caloric and iso-nitrogenous. The experimental TMRs were randomly assigned to four groups of male calves (n = 6) according to completely randomized design and the experiment continued for four months. The calves fed TMR2 exhibited a significant improve in dry matter intake, average daily weight gain, feed conversion ratio and feed economics compared to other groups. The same group also showed higher digestibility of dry matter, crude protein, neutral-, and acid detergent fibers than those fed on other TMRs. It is concluded that TMR with 33% fungal-treated wheat straw replacement has a potential to give an enhanced growth performance and nutrient digestibility in male Nili Ravi buffalo calves.
Ahmed, Mustafa Sami,Shah, Nor Shahida Mohd,Al-Aboosi, Yasin Yousif,Gismalla, Mohammed S.M.,Abdullah, Mohammad F.L.,Jawhar, Yasir Amer,Balfaqih, Mohammed Electronics and Telecommunications Research Instit 2021 ETRI Journal Vol.43 No.2
The research domain of underwater communication has garnered much interest among researchers exploring underwater activities. The underwater environment differs from the terrestrial setting. Some of the main challenges in underwater communication are limited bandwidth, low data rate, propagation delay, and high bit error rate (BER). As such, this study assessed the underwater acoustic (UWA) aspect and explored the expression of error performance based on t-distribution noise. Filter orthogonal frequency-division multiplexing refers to a new waveform candidate that has been adopted in UWA, along with turbo and polar codes. The empirical outcomes demonstrated that the noise did not adhere to Gaussian distribution, whereas the simulation results revealed that the filter applied in orthogonal frequency-division multiplexing could significantly suppress out-of-band emission. Additionally, the performance of the turbo code was superior to that of the polar code by 2 dB at BER 10-3.
Ahmed Abu-Zaid,Saeed Baradwan,Ehab Badghish,Rayan AlSghan,Ahmed Ghazi,Bayan Albouq,Khalid Khadawardi,Nora F AlNaim,Latifa F AlNaim,Meshael Fodaneel,Fatimah Shakir Abualsaud,Mohammed Ziad Jamjoom,Abdul 대한산부인과학회 2022 Obstetrics & Gynecology Science Vol.65 No.5
To perform a systematic review and meta-analysis of all randomized controlled trials (RCTs) that evaluated the efficacyand safety of prophylactic tranexamic acid (TXA) versus a control (placebo or no treatment) during hysterectomy forbenign conditions. Six databases were screened from inception to January 23, 2022. Eligible studies were assessed forrisk of bias. Outcomes were summarized as weighted mean differences and risk ratios with 95% confidence intervalsin a random-effects model. Five studies, comprising six arms and 911 patients were included in the study. Two andthree studies had an overall unclear and low risk of bias, respectively. Estimated intraoperative blood loss, requirementfor postoperative blood transfusion, and requirement for intraoperative topical hemostatic agents were significantlyreduced in a prophylactic TXA group when compared with a control group. Moreover, postoperative hemoglobinlevel was significantly higher in the prophylactic TXA group than in the control group. Conversely, the frequencyof self-limiting nausea and vomiting was significantly higher in the prophylactic TXA group than in the control group. There were no significant differences between the groups in terms of surgery duration, hospital stay, and diarrhearate. All the RCTs reported no incidence of major adverse events in either group, such as mortality, thromboembolicevents, visual disturbances, or seizures. There was no publication bias for any outcome, and leave-one-out sensitivityanalyses demonstrated stability of the findings. Among patients who underwent hysterectomy for benign conditions,prophylactic TXA appeared largely safe and correlated with substantial reductions in estimated intraoperative bloodloss and related morbidities.
Abdel-Latif, F.F.,Ahmed, E.Kh.,Mekheimer, R.,Mashaly, M.M. The Pharmaceutical Society of Korea 1997 Archives of Pharmacal Research Vol.20 No.5
Several new spiro compounds were synthesized via one-pot ternary condensation of isatin, malononitrile and each of thiobarbituric acid, barbituric, 3-methyl-pyrazolin-5-one, 1-phenyl-3-methyl-pyrazolin-5-one, acetylacetone, benzoylacetone, ethyl acetoacetate, phenacyl cyanide or ethyl-cyanoacetate dimer. Structures and reaction mechanisms were reported and supported via a second synthetic route.
Antinociceptive and antidiarrhoeal activities of Sonneratia caseolaris
Ahmed, F,Baksi, B,Sadhu, SK,Shahid, IZ Kyung Hee Oriental Medicine Research Center 2007 Oriental pharmacy and experimental medicine Vol.7 No.3
The crude ethanol extract of leaves of Sonneratia caseolaris Linn. (Sonneratiaceae) was screened for its antinociceptive and antidiarrhoeal activities. The extract produced significant writhing inhibition in acetic acid induced writhing in mice at dose of 250 and 500 mg/kg body weight (P<0.01) comparable to the standard drug diclofenac sodium at the dose of 25 mg/kg of body weight. When tested for its antidiarrhoeal effects on castor oil induced diarrhea in mice, it increased mean latent period and decreased the frequency of defecation significantly at the dose of 500 mg/kg body weight (P < 0.05) comparable to the standard drug loperamide at the dose of 50 mg/kg of body weight. The overall results tend to suggest the antinociceptive and antidiarrhoeal activities of the extract.
Nichols, Chelsea,Cruz Espinoza, Ligia Maria,von Kalckreuth, Vera,Aaby, Peter,Ahmed El Tayeb, Muna,Ali, Mohammad,Aseffa, Abraham,Bjerregaard-Andersen, Morten,Breiman, Robert F.,Cosmas, Leonard,Crump, J Oxford University Press 2015 Clinical infectious diseases Vol.61 No.suppl4
<P><B><I>Background.</I></B> The clinical diagnosis of bacterial bloodstream infections (BSIs) in sub-Saharan Africa is routinely confused with malaria due to overlapping symptoms. The Typhoid Surveillance in Africa Program (TSAP) recruited febrile inpatients and outpatients of all ages using identical study procedures and enrollment criteria, thus providing an opportunity to assess disease etiology and pretreatment patterns among children and adults.</P><P><B><I>Methods.</I></B> Inpatients and outpatients of all ages with tympanic or axillary temperatures of ≥38.0 or ≥37.5°C, respectively, and inpatients only reporting fever within the previous 72 hours were eligible for recruitment. All recruited patients had one blood sample drawn and cultured for microorganisms. Data from 11 TSAP surveillance sites in nine different countries were used in the analysis. Bivariate analysis was used to compare frequencies of pretreatment and BSIs in febrile children (<15 years old) and adults (≥15 years old) in each country. Pooled Cochran Mantel–Haenszel odds ratios (ORs) were calculated for overall trends.</P><P><B><I>Results.</I></B> There was no significant difference in the odds of a culture-proven BSI between children and adults among inpatients or outpatients. Among both inpatients and outpatients, children had significantly higher odds of having a contaminated blood culture compared with adults. Using country-pooled data, child outpatients had 66% higher odds of having <I>Salmonella</I> Typhi in their bloodstream than adults (OR, 1.66; 95% confidence interval [CI], 1.01–2.73). Overall, inpatient children had 59% higher odds of pretreatment with analgesics in comparison to inpatient adults (OR, 1.59; 95% CI, 1.28–1.97).</P><P><B><I>Conclusions.</I></B> The proportion of patients with culture-proven BSIs in children compared with adults was similar across the TSAP study population; however, outpatient children were more likely to have <I>Salmonella</I> Typhi infections than outpatient adults. This finding points to the importance of including outpatient facilities in surveillance efforts, particularly for the surveillance of typhoid fever. Strategies to reduce contamination among pediatric blood cultures are needed across the continent to prevent the misdiagnosis of BSI cases in children.</P>
You, Jung-Min,Ahmed, Mohammad Shamsuddin,Han, Hyoung Soon,Choe, Ju eun,Ü,stü,ndaf,, Zafer,Jeon, Seungwon Elsevier 2015 Journal of Power Sources Vol.275 No.-
<P><B>Abstract</B></P> <P>We have been prepared a series of heteroatoms (N and/or S) doped graphene in different ratios from various doping precursors (pyridine, thiophene and bithiophene combined separately with dipyrrolemethane and used as single N and/or S precursor) by thermal reaction. The as synthesized heteroatoms-doped graphene materials have also been characterized <I>via</I> transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. The XPS and Raman investigations suggest a better dual-doping with higher conversion rate of graphitic-N and thermal reduction of oxygen into the graphene sheets. The electrochemical investigation reveals that the both N and S-doped graphene (S<SUB>1</SUB>N<SUB>2</SUB>-GN800 and S<SUB>2</SUB>N<SUB>2</SUB>-GN800) have better catalytic activity on oxygen reduction reaction (ORR) than only N-doped graphene (N<SUB>3</SUB>-GN800) with the assistance of synergistic effect of dual-doping. Particularly, the high thermal treated final product, N and S dual-doped graphene (S<SUB>2</SUB>N<SUB>2</SUB>-GN1000) shows remarkable electrocatalytic activity towards the ORR which not only establishes a pathway of four-electron transfer reaction but also exhibits a better fuel selectivity and stability than that of commercially available 20wt% Pt/C electrode.</P> <P><B>Highlights</B></P> <P> <UL> <LI> The different ratios of heteroatoms-doped graphene nanosheets are developed. </LI> <LI> The dipyrrolemethane compounds as doping agents for the first time. </LI> <LI> The bithiophene-dipyrrolemethane doped graphene sheets are high efficiency for ORR catalysts. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>
Anwar, M.S.,Ahmed, F.,Koo, B.H. Elsevier Science 2014 Acta materialia Vol.71 No.-
We report on a detail study of the structural, magnetic and magnetocaloric properties of Zn-doped nickel-zinc ferrites with different Zn concentrations. Polycrystalline Ni<SUB>1-x</SUB>Zn<SUB>x</SUB>Fe<SUB>2</SUB>O<SUB>4</SUB> (0.0≤x≤0.7) ferrite samples were prepared using the conventional solid-state reaction method. The X-ray diffraction results indicate that the ferrite samples have a cubic spinel type structure without any impurity phase. Temperature-dependent magnetization measurements and Arrott analysis reveal second-order ferromagnetic transition in all samples, with the Curie temperature decreasing progressively with increasing Zn concentration, from ~845K for x=0.0 to 302K for x=0.7. An increase in magnetization at low temperature was observed for Zn doping up to x=0.5. A maximum in magnetic entropy change, |ΔS<SUB>M</SUB><SUP>max</SUP>| (~1.39Jkg<SUP>-1</SUP>K<SUP>-1</SUP> at 2.5T), was observed in the Ni<SUB>0.7</SUB>Zn<SUB>0.3</SUB>Fe<SUB>2</SUB>O<SUB>4</SUB> sample. The width of magnetic entropy curve was found to increase with the Zn concentration. Also, the |ΔS<SUB>M</SUB><SUP>max</SUP>| and relative cooling power were found to increase with increasing applied magnetic field, which indicates much greater cooling power is expected with a larger magnetic field. This investigation suggests that Ni<SUB>1-x</SUB>Zn<SUB>x</SUB>Fe<SUB>2</SUB>O<SUB>4</SUB> (0.0≤x≤0.7) ferrite samples are possible candidates for magnetic refrigeration across a wide range of working temperatures.
Qu, D.,Liu, X.,Ahmed, F.,Lee, D.,Yoo, W. Royal Society of Chemistry 2015 Nanoscale Vol.7 No.45
<P>We investigated the carrier transport in multi-layer MoS2 with consideration of the contact resistance (R-c) and interlayer resistance (R-int). A bottom graphene contact was suggested to overcome the degradation of I-d modulation in a back gated multi-layer MoS2 field effect transistor (FET) due to the accumulated R-int and increased R-c with increasing thickness. As a result, non-degraded drain current (I-d) modulation with increasing flake thickness was achieved due to the non-cumulative R-int. Benefiting from the low R-c induced by the negligible Schottky barrier at the graphene/MoS2 interface, the intrinsic carrier transport properties immune to R-c were investigated in the multi-layer MoS2 FET. similar to 2 times the enhanced carrier mobility was attained from the self-screened channel in the bottom graphene contacted device, compared to those with top metal contacts.</P>