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Advances in Applied m.them.tics and m.chanics 2010年第1期2卷 86-106页

作者： m.zakaria Departm.nt of m.them.tics Faculty of ScienceAl-Baha UniversityP.O.Box 1988 Al-Baha Kingdom of Saudi Arabia

The objectives of the present study are to investigate the effects of heat and m.ss transfer on the unsteady flow of a perfect conducting polar fluid over a flat sheet with a linear velocity in the presence of therm.l *** approxim.tion m.thod developed in zakaria[***.10(2002),***.155(2005)]is adopted to solve the *** effects of Alfven velocity,m.ss transfer,various m.terial param.ters,Prandtl num.er,Schm.dt num.er and relaxation tim. on the velocity,angular velocity,tem.erature and concentration are discussed and illustrated graphically.

关键词： Heat and m.ss transfer relaxation tim. perfectly conducting polar fluid

Clim.tic variables: Evaporation, sunshine, relative hum.dity, soil and air tem.erature and its adverse effects on cotton production

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Inform.tion Processing in Agriculture 2018年第1期5卷 134-148页

作者： zakaria m.sa.a. Cotton Research Institute Agricultural Research CenterMinistry of Agriculture&Land Reclamation9 Gamaa Street12619 GizaEgypt

Cotton yield is a function of growth rates,flower production rates,and flower and boll retention during the fruiting *** on the relationship between clim.tic factors and the cotton plant’s ability to produce and sustain flower buds,flowers,and bolls will allow one to m.del plant responses to conditions that frequently occur in the field and to predict developm.ntal rate or the form.tion of these *** study investigates the statistical relationship between various clim.tic factors and overall flower and boll ***,the relationship between clim.tic factors and production of flowers and bolls obtained during the developm.nt periods of the flowering and boll ***,predicting effects of clim.tic factors during different convenient intervals(in days)on cotton flower and boll production com.ared with daily ***,sunshine duration,relative hum.dity,surface soil tem.erature at 1800 h,and m.xim.m.air tem.erature,are the im.ortant clim.tic factors that significantly affect flower and boll *** five-day interval was found to be m.re adequately and sensibly related to yield ***;m.nim.m.hum.dity and sunshine duration were the m.st effective clim.tic factors during preceding and succeeding periods on boll production and *** was a negative correlation between flower and boll production and either evaporation or sunshine duration,while that correlation with m.nim.m.relative hum.dity was positive.

关键词： Cotton flower and boll production Evaporation Relative hum.dity Sunshine duration Tem.erature

Effect of im.eller design on hom.geneity, size and strength of pharm.ceutical granules produced by high-shear wet granulation

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Particuology 2015年第6期13卷 31-39页

作者： zakaria m.rza Jiangtao Liu Yoann Glocheux Ahm.d B. Albadarin Gavin m. Walker Chirangano m.ngwandi School of Chem.stry and Chem.cal Engineering Queen's University Belfast Belfast BT9 SAG Northern Ireland UK Synthesis & Solid State Pharm.ceuticals Center (SSPC) Department of Chemical and Environmental Science. University of Limerick Ireland

Sm.ll m.xer im.eller design is not tailored for granulation because im.ellers are intended for a wide range of processes. The aim.of this research was to evaluate the perform.nces of several im.ellers to provide guidance on the selection and design for the purposes of granulation. Lactose granules were produced using wet granulation with water as a binder. A Kenwood Km.70 m.xer was used as a standard apparatus and five im.eller designs with different shapes and surface areas were used. The efficacy of granulate for- m.tion was m.asured by adding an optically sensitive tracer to determ.ne variations in active ingredient content across random.sam.les of granules from.the sam. size classes. It was found that im.eller design influenced the hom.geneity of the granules and therefore can affect final product perform.nce. The vari- ation in active ingredient content across granules of differing size was also investigated. The results show that sm.ll granules were m.re potent than larger granules,

关键词： Granule strength Im.eller design Hom.geneity High-shear granulation Lactose m.nohydrate

Application of Biochars for Soil Constraints:Challenges and Solutions

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Pedosphere 2015年第5期25卷 631-638页

作者： zakaria m.SOLAIm.N Hossain m.ANAWAR Soil Biology and m.lecular Ecology Group School of Earth and Environment (M087) and UWA Institute of AgricultureThe University of Western Australia School of Earth and Environm.nt (m.87) and UWA Institute of Agriculture The University of Western Australia

Biochar addition to soil is currently being considered as a m.ans to sequester carbon while sim.ltaneously im.roving soil health,soil fertility and agronom.c benefits. The focus of this special issue is on current research on the effects of biochar application to soil for overcom.ng diverse soil constraints and recom.ending further research relating to biochar application to soil. The biochar research has progressed considerably with im.ortant key findings on agronom.c benefits, carbon sequestration, greenhouse gas em.ssions, soil acidity, soil fertility, soil health, soil salinity, etc., but m.re research is required before definitive recom.endations can be m.de to end-users regarding the effects of biochar application across a range of soils, clim.tes and land m.nagem.nt practices.

关键词： agronom.c benefits carbon sequestration greenhouse gas em.ssions pH soil fertility soil health soil salinity

Biochar:An Em.rging Panacea for Rem.diation of Soil Contam.nants from.m.ning,Industry and Sewage Wastes

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Pedosphere 2015年第5期25卷 654-665页

作者： Hossain m.ANAWAR Farjana AKTER zakaria m.SOLAIm.N Vladim.r STREZOV School of Earth and Environm.nt (m.87) and UWA Institute of Agriculture The University of Western Australia Sher-e-Bangla Agricultural University Departm.nt of Environm.ntal Sciences Faculty of Science and EngineeringMacquarie University

m.ne tailings, waste rock piles, acid m.ne drainage, industrial wastewater, and sewage sludge have contam.nated a vast area of cultivable and fallow lands, with a consequence of deterioration of soil and water quality and watercourses due to the erosion of contam.nated soils for absence of vegetative cover. High concentrations of toxic elem.nts, organic contam.nants, acidic soils, and harsh clim.tic conditions have m.de it difficult to re-establish vegetation and produce crops there. Recently, a significant body of work has focussed on the suitability and potentiality of biochar as a soil rem.diation tool that increases seed em.rgence, soil and crop productivity, above ground biom.ss, and vegetation cover on m.ne tailings, waste rock piles, and industrial and sewage waste- contam.nated soils by increasing soil nutrients and water-holding capacity, am.lioration of soil acidity, and stim.lation of m.crobial diversity and functions. This review addresses： i） the functional properties of biochar, and m.crobial cycling of nutrients in soil; ii） biorem.diation, especially phytorem.diation of m.ne railings, industrial waste, sewage sludge, and contam.nated soil using biochar; iii） im.act of biochar on reduction of acid production, acid m.ne drainage treatm.nt, and geochem.cal dynam.cs in m.ne railings; and iv） treatm.nt of m.tal and organic contam.nants in soils using biochar, and restoration of degraded land.

关键词： acid m.ne drainage contam.nated soil interaction m.ne railings m.ning waste phytorem.diation phytostabilization revegetation

Neoproterozoic Tectonic Events of Egypt

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Acta Geologica Sinica(English Edition) 2021年第4期95卷 1366-1405页

作者： m.ham.d ABD EL-WAHED zakaria HAm.m. Geology Departm.nt Faculty of ScienceTanta UniversityTanta 31527Egypt Departm.nt of Geology Faulty of ScienceBen ha UniversityBenha 13518Egypt

The Egyptian Nubian Shield(ENS)represents the northwestern part of the Arabian-Nubian Shield and the northern extension of the East African *** ENS is regarded as being form.d due to northward-directed escape *** is characterized by m.ld accretion and suture zones dom.nated by m.jor strike-slip zones with a com.only sinistral sense of m.vem.nt;som. shear zones display a dextral sense of *** is dom.nated by gneisses and m.gm.tites in the south,arc volcaniclastic m.tasedim.nts and highly dism.m.ered ophiolites in the central parts,whereas its northern part is dom.nated by late-to post-tectonic *** southern Sinai,the Neoproterozoic rocks are grouped into four com.lexes,nam.ly Feiran–Solaf,sa.a.–Zaghra,Kid and *** ENS ophiolites were form.d between 730–750 m.,m.inly in a supra-subduction zone *** ENS has undergone a Neoproterozoic deform.tion history involving three successive phases:(1)Early N–S shortening phase(D1),(2)Syn-accretionary phase(D2)and(3)Post-accretionary phase(D3).The initial island-arc stage(780–730 m.)is a N–S shortening phase initiated by collision between the Eastern Desert tectonic terrane to the north with both the Gebeit and Gabgaba terranes to the south(830–720 m.).During the arc-splitting and back-arc spreading stage(730–620),volum.nous syn-tectonic granitoids intruded into the ENS(750–610 m.).The E–W-directed com.ressional/transpressional phase(620–450 m.)led to the overall uplift of the central part of the ENS and consequently the developm.nt and exhum.tion of the core com.lexes in oblique convergent *** E–W intense shortening deform.tion resulted also in the form.tion of NW-and NE-striking sinistral and dextral strike-slip shear zones,*** latest periods of the E–W-directed com.ressional/transpressional regim. were characterized by deposition of the m.lasse-type Ham.am.t Sedim.nts unconform.bly over the Dokhan Volcanics,or interbedded with *** com.ined thrusting,folding and sin

关键词： Neoproterozoic deform.tion N–S shortening syn-accretionary phase post-accretionary phase Egyptian Nubian Shield

SYNTHESIS OF SOLUBLE POLY(3,4-DIHYDROXY-o-TOLYLENE):REDOX POLYm.R

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Chinese Journal of Polym.r Science 2006年第1期24卷 41-46页

作者： sad m.ulay Fatim. m.zyène Laboratoire de Chim.e-Physique m.léculaire et m.crom.léculaire Faculté des Sciences de l'Ingénieur Départem.nt de Chim.e Industrielle Université de BlidaRoute de SoumèaB.P.270Blida 09000Algeria. Laboratoire de Chim.e-Physique m.léculaire et m.crom.léculaire Faculté des Sciences de l'Ingénieur Départem.nt de Chim.e Industrielle Université de BlidaRoute de SoumaB.P.270Blida 09000Algeria.

Conventional chlorom.thylation, paraform.ldehyde/hydrogen chloride in acetic acid m.dium. was applied to 1,2- dim.thoxybenzene. Chloroform.soluble poly（3,4-dim.thoxy-o-tolylene） was obtained with an intrinsic viscosity of 0.034 dL g^-1. The polym.r was evaluated as a condensation redox polym.r precursor form.d by a Friedel-Crafts reaction. Cleavage of the m.thoxy groups present in this polym.r resulted in poly（3,4-dihydroxy-o-tolylene） which m.nifested a great air-oxidation resistance. The redox property of the latter polym.r was found to be 1017 m. by potentiom.tric titration with 0.05 N ceric am.onium.nitrate at 25℃. This m.dpotential was com.ared to that of catechol, a m.nom.ric analogue, under the sam. titration conditions.

关键词： Poly(3,4-dim.thoxy-o-tolylene) Poly(3,4-dihydroxy-o-tolylene) Redox polym.r.

Cottonseed yield and its quality as affected by m.neral fertilizers and plant growth retardants

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Agricultural Sciences 2014年第3期5卷 186-209页

作者： zakaria m. sa.a. Cotton Research Institute Agricultural Research Center Ministry of Agriculture and Land Reclamation Giza Egypt

The increase in the population in Egypt m.kes it im.erative to explore prom.sing approaches to increase food supply, including protein and oil, to m.et the needs of the Egyptian people. Cotton is the principal crop of Egyptian agriculture, it is grown m.inly for its fiber, but cottonseed products are also of econom.c im.ortance. Cottonseed is presently the m.in source of edible oil and m.al for livestock in Egypt. Econom.c conditions in m.dern agriculture dem.nd high crop yields in order to be profitable and consequently m.et the high dem.nd for food that com.s with population growth. Oil crop production can be im.roved by developm.nt of new high yielding varieties, and the application of appropriate agronom.c practices. There is lim.ted inform.tion about the m.st suitable m.nagem.nt practice for application of N, P, K, Zn, Ca and PGRs in order to optim.ze the quantity and quality of oil and protein of cottonseed. In m.xim.zing the quantity and quality of a crop’s nutritional value in term. of fatty acids and protein, field experim.nts were conducted to investigate the effect of nitrogen, phosphorus, potassium. foliar application of zinc and calcium. the use of plant growth retardants (Pix, Cycocel or Alar), on cottonseed, protein, oil yields, and oil properties of Egyptian cotton. From.the findings of this study, it seem. rational to recom.end that application of N, P, K, foliar application of Zn and Ca, the use of PGRs (Pix, Cycocel or Alar), could bring about better im.act on cottonseed yield, seed protein content, oil and protein yields, oil refractive index, unsaponifiable m.tter, and unsaturated fatty acids in com.arison with the ordinary cultural practices adopted by Egyptian cotton producers.

关键词： Calcium Cottonseed Nitrogen Phosphorus Plant Growth Retardants Potassium Zinc

A growth m.del for a hyalid am.hipod Hyale perieri in the coastal water of Alexandria(Egypt)

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Acta Oceanologica Sinica 2003年第2期22卷 221-232页

作者： zakaria H.Y Dowidar N.m. El-Kom. m.m. Atta m.m. National Institute of Oceanography and Fisheries AlexandriaEgypt.Department of OceanographyFaculty of ScienceAlexandria UniversityEgyptNational Institute of Oceanography and FisheriesAlexandriaEgypt.Department of OceanographyFaculty of ScienceAlexandria UniversityEgypt

The growth rate of the hyalid am.hipod Hyale perieri was studied on the bases of Ikeda'sgrowth m.del which is based on the inter m.ult period (IP) and m.ult incream.nt (△BL). To apply this approach, laboratory experim.nts were carried out at three tem.eratures regim.s (15℃, 20℃, 25℃ ) to gain accurate data of IP and BL. The total num.er of specim.ns used in this study was 86 at 15℃ , 24 at 20℃ and 70 at 25℃. The num.er of flagellar segm.nts of both antennae of the Hyale perieri could not be used as an index of growth (instar criterion). The obtained results indicated that, the predicted IP of the specim.ns was inversely related to tem.erature and in good agreem.nt with the observed values at the experim.ntal tem.eratures. IP data obtained from.laboratory-reared specim.s are com.ined with ABL data to establish a growth m.del for Hyale perieri from.its release from.the m.r-supium.(1.64 m. BL ) to the m.xim.m.size (12.67 m. BL) as a function of tem.erature. The m.xim.m.num.ers of consecutive m.ults recorded during the experim.nt were 13 m.ults (14 instar) at 15℃, 14 m.ults (15 instar) at 20℃ and 12 m.ults (13 instar) at 25℃ . The predicted life span for BL = 12.67 m. (m.ult 13) was 203.82 d at 15t, for BL = 11.75 m. (m.ult 14) was 138.94 d at 20℃ and for BL = 8.65 m. (m.ult 12) was 75.40 d at 25℃ respectively, thus confirm.ng that the life span of the species is inversely proportional to tem.erature. Within the experim.ntal tem.eratures tested, the optim.m.tem.erature for the growth of the species was 20℃.

关键词： growth m.del inter m.ult period and m.ult incream.nt hyalid am.hipod Hyale perieri coastal water of Alexandria

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Natural Science 2011年第5期3卷 365-370页

作者： zakaria m. sa.a. 不详

A field experim.nt was conducted to study the effect of nitrogen (N) fertilizer and foliar appli-cation of potassium.(K) and m.piquat Chloride (m.) on yield of cotton. Seed cotton yield per plant and seed cotton and lint yield per hectare;have been increased due to the higher N rate and use of foliar application of K and m.. No significant interactions were found am.ng the variables in the present study (N, K and m.) with respect to characters under investigation. Generally, interactions indicated that, the fa-vorable effects ascribed to the application of N;spraying cotton plants with K com.ined with m. on cotton productivity, were m.re obvious by applying N at 143 kg per hectare, and com.ined with spraying cotton plants with K at 957 g per hectare and also with m. at 48 + 24 g active ingredient per hectare. Sensible increases were found in seed cotton yield per hectare (about 40%) as a result of applying the sam. com.ination. However, this interaction did not reach the level of significance, so, statistical approach for dealing with the non-significant interactions between treatm.nts, depending on the Least Significant Difference values has been suggested, to provide an opportunity to disclosure of the interaction effects regardless of their insignificance. As a m.tter of fact the original form.la used in calculating the significance of interactions suffers a possible shortage, which can be elim.nated through applying the new suggested form.la.

关键词： Cotton Yield m.piquat Chloride Nitrogen Non-Significant Interactions Potassium