2021-10-08T08:17:49Z https://ijsts.shirazu.ac.ir/?_action=export&rf=summon&issue=532

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 H. ZEINALI A. ARZANI K. RAZMJO There is little information available on morphological and agronomic traits, as well aschemical compositions of Iranian mint landraces. This study was conducted to investigate themorphological, agronomic and oil content characteristics of Iranian mint landraces using twelvelandraces, three of which belong to Mentha longifolia, and the remaining, Mentha spicata L, originatedfrom central regions of Iran. Days to 50% and 100% flowering, plant height, number of lateral branches,leaf length, leaf width, herbage yield per plant, number of nodes per main stem, number of nodes perlateral branch, spike length of main stem, number of spikes per plant, height of lateral branches andspike length of lateral branches were recorded and used in this study. The results showed the significantdifferences among landraces for all tested traits with the exception of the number of nodes per lateralbranch. Two accessions, including Mzin3 with 1.9 ml/100g essential oil content, and Mzin6 with 2.1ml/100g essential oil content, produced the highest essential oil content. Mzin3, with15.9 g/plant herbagedry yield and Mzin6 8.1 g/plant, produced the highest and lowest herbage yield. Genotypic andphenotypic coefficients of variation were high for the spike length of the main stem (32.3%, 29.7 %), thenumber of spikes per plant (41.7%, 28.5%), and the essential oil content (38.5%, 34.1%), and was lowfor days to 50% flowering (11.9%, 10.7 %), days to 100% flowering (9.2%, 6.5%) and number of nodesper main stem (9.7%, 6.9%). Stepwise regression analysis indicated that leaf length justified 53 percentof the total variation and was accounted as the most important component of essential oil content.Cluster analysis divided the landraces into 3 groups, each of which having 5, 3 and 4 clones. The numberof nodes per main stem, number of lateral branches, spike width of main stem, leaf width, days to 50%flowering, plant height and nodes per lateral branches were the major sources of diversity among themint clones. Strong association was observed between leaf length and essential oil content (r = 0.73).Therefore, under tested environmental conditions, leaf length may be used as a morphological criterionfor selecting clones with high essential oil content in mint. Mint mentha spicata mentha longifolia essential oil content diversity 2004 06 26 1 9 https://ijsts.shirazu.ac.ir/article_2828_37fb6a5f5fe49bce78ba8ba07c92ee13.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 F. TABANDEH B. YAKHCHALI S. A. SHOJAOSADATI M. KHODABANDEH M. H. SANATI The batch fermentation production of human growth hormone (hGH) was studied in a newrecombinant Escherichia coli. The effect of different levels of dissolved oxygen and glucoseconcentration on cell density and substrate utilization were evaluated. The results indicated that theoptimum level of dissolved oxygen was 25% of air saturation. The specific growth rate reached amaximum for an optimal glucose concentration of 5 gl-1, the maximum yield was 0.58 gg-1 and glucosewas completely consumed after 10 hrs. The growth of recombinant E. coli on semi-defined and complexmedia was compared. The results demonstrated that dry cell weight and maximum specific growth ratewere 2.35 gl-1 and 0.4 h-1 on a complex medium, respectively, but they were 3.3 gl-1 and 0.24 h-1 onsemi-defined medium. The plasmid stability and hGH production during batch fermentation wereinvestigated. The results suggested that the specific growth rate is the most important factor on hGHproduction and should be investigated in fed batch cultivation to get high cell density. Batch fermentation recombinant Escherichia coli human Growth Hormone microbial kinetics 2004 06 26 11 17 https://ijsts.shirazu.ac.ir/article_2829_57650a82e24a87068c98d7aafa593e38.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 M. ALIASGHARPOUR H. HEKMATSHOAR M. HOSSEYNI F. SOME-EH The chemical nature of secretion by the stigma and transmitting tissue in Datura stramoniumwas studied by light microscopy using Sudan black B, Coomasie brilliant blue (CBB), Toluidine blue,Safranin, and PAS. The stigmatic secretion reacted positively for lipids. During development, stigmaticcells became separated and intracellular lipids were transferred to intercellular spaces where theygradually migrated to the stigma surface. Excretion of the lipids was a continuous process and persistedduring maturity and even in pollinated and opened flowers (post-pollinated). Lipid secretion wasassociated with cell autolysis in papillae and in secretory cells of the stigma, particularly in superficiallylocated ones. The transmitting tissue cells also showed glandular activity with the release of apolysaccharide rich substance. The pollen germination and pollen tube growth seem to be closelydependent upon these secretions in Datura stramonium. The different nature of the secretion of thestigma (lipids) versus secretion of the transmitting tissue of the style (carbohydrates), supports thehypothesis that the pollen tube metabolism changes from autotrophic to the heterotrophic upon enteringthe transmitting tissue from the stigma surface. Datura stramonium secretory cells lipids Carbohydrates pollination stigma transmitting tissue papillae compatibility 2004 06 26 19 31 https://ijsts.shirazu.ac.ir/article_2830_1a61d6fedef44376ce6a2c1bc9367178.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 M. SHEIDAI H. JAHANBAKHT P. SOFI-SIYAVASH Tea (Camellia sinensis) is one of the most economically important crops and is considered tobe the national drink of Iran. Although there has been an intensive cytogenetic study of tea in differentregions of the world, there has been no report from Iran. Therefore, the present investigation was carriedout in order to present the basic cytogenetical features of various tea cultivators grown in the country.The meiotic analysis of the tea cultivators studied showed variation in the prophase sub-stage of meiosis-I, due to the occurrence of a synezetic knot and post pachytene diffuse sub-stage. All tea cultivatorsstudied were diploid, with the chromosome number n=15. Although the major feature of chromosomeassociation was bivalent formation, quadrivalents were formed in the cultivator 3013, possibly due tostructural hybridity. The ANOVA test showed the presence of a significant difference among thecultivators for terminal, intercalary and total chiasmata, as well as ring bivalents indicating their genomicdifferences. Cluster analysis and PCA ordination of cultivators which are based on meioticcharacteristics, group those cultivators which show cytogenetic similarities. Tea cytogenetic chiasma frequency cluster analysis 2004 06 26 33 42 https://ijsts.shirazu.ac.ir/article_2831_627486a138a739807d00ac0c02e4fa97.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 A. MORADSHAHI B. SALEHI ESK ANDARI B. KHOLDEBARIN Drought is considered as one of the most important limiting factors for oil seed canola plant(Brassica napus L.) growth and productivity in Iran. On the basis of root and shoot dry weight asaffected by water stress exerted by PEG 6000, out of 9 canola cultivars, a relatively tolerant (cv. Aghaii)and a sensitive cultivar (cv. PO4) were selected. Their responses to low water potential with respect tochanges in activity of the antioxidant enzyme ascorbate peroxidase, K+ uptake, and its translocation tothe shoots and production of osmoprotectants proline and soluble sugars were analyzed and compared.Although low water potential did not influence ascorbate peroxidase activity, constitutively the enzymeactivity was significantly higher in the tolerant cultivar. A significant increase in root proline contentwas observed with a decrease in external water potential up to -.48 MPa. The increase was 2 to 3 timeshigher in the tolerant Aghaii cultivar. Although the total soluble sugars tended to increase under lowwater potential, the amounts accumulated were mostly comparable in both cultivars. K+ uptake by theroots and its translocation to the shoots decreased at low water potential, however the amount taken upand translocated was consistently higher in the tolerant cultivar. Constitutively higher ascorbateperoxidase activity along with the higher rates of proline accumulation and K+ uptake are taken as part ofthe mechanisms which confer drought tolerance to the Aghaii cultivar. water stress canola plants ascorbate peroxidase Proline soluble sugars K+ uptake 2004 06 26 43 50 https://ijsts.shirazu.ac.ir/article_2832_e939c6abe3888d0a6d8232662e5457f7.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 B. SHIRAN A. M. MASHAYEKH A restriction-site analysis of chloroplast DNA (cpDNA) was carried out to evaluate the levelof diversity in Vicia faba L. germplasm selected from different geographical regions using 11 restrictionendonucleases. We analyzed 214 restriction sites in 18 accessions of Vicia faba. All of the accessionshad identical cpDNAs, pointing out the ancestral character of all the accessions are of only one genepool, and all of them must have evolved through the same maternal lineage. Molecular size of thechloroplast DNAs obtained was 123.25 kb, indicating that it had lost one of the inverted repeats. Due tolack of cpDNA diversity, it is concluded that the broad bean has passed through a genetic bottleneckduring domestication and lost most of its cytoplasmic variability. The present study favors themonophyletic origin of its cytoplasm, and accordingly, of Vicia faba. Chloroplast DNA- restriction site analysis - vicia faba L. germplasm 2004 06 26 51 55 https://ijsts.shirazu.ac.ir/article_2833_46ca7940fdf5182dcf895d2171f04f13.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 S. VALLIAN K. S. CHANG Our previous studies showed that the promyelocytic leukemia protein, PML, functions as acellular and growth suppressor. Transient expression of PML was also found to repress the activity of theepidermal growth factor receptor (EGFR) gene promoter. In this study, we have examined the effects ofPML on A431 cells, which express a high level of EGFR protein. The PML gene was introduced into thecells using the adenovirus-mediated gene transfer system. Western blot analysis on the extracts from thecells expressing PML showed a significant repression in the expression of the EGFR protein. The cellswere examined for growth and DNA synthesis. The data showed a marked reduction in both growth andDNA synthesis rate in the cells expressing PML compared with the control cells. Furthermore, incomparison with the controls, the cells expressing PML were found to be more in G1 phase, fewer in Sand about the same number in the G2/M phase. These data clearly demonstrated that the repression ofEGFR expression in A431 cells by PML was associated with inhibition of cell growth and alteration ofthe cell cycle distribution, suggesting a novel mechanism for the known growth inhibitory effects ofPML. PML EGFR cell cycle A431 cells Expression 2004 06 26 57 64 https://ijsts.shirazu.ac.ir/article_2834_2532422ac44fc0059f5293db7aaf4426.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 M. MOAZZEN Chloritoid is crystallised with chlorite, white mica and garnet in chlorite zone metapelites ofthe regional metamorphic rocks of the Sanandaj-Sirjan metamorphic belt in southern Iran. Chemistry ofcoexisting minerals is studied using microprobe analysis. Application of the chlorite-chloritoidgeothermometry gives temperatures of 515°C and 557°C. The Chlorite-garnet Fe-Mg exchangegeothermometer indicates temperatures between 442°C and 460°C for various pressures. A comparisonof the results from two geothermometers, along with a study of mineral assemblages in the rocks showthat the chlorite-chloritoid thermometer overestimates the temperature by about 70°C. Sanandaj-Sirjan metamorphic belt metapelites chlorite-chloritoid-garnet geothermometry 2004 06 26 65 78 https://ijsts.shirazu.ac.ir/article_2835_565c10a8efae58077c565b16fa82e271.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 B. ETEMADI T. TAEB H. SHARGHI A. TAJARODI H. NAEIMI The crystal structure of the compound C20 H24 N2 O24 was determined by direct methods. Thecrystals are monoclinic, space group P21/n, and unit cell parameters are: a= 10.2342 (9), b=4.8763 (5),c=19.3578 (11) A, β =98.9632 (10) o ,V=956.6 (5) A3, Z=2, Dc=1.239grm-3, Dm=1.22grm-3. The final Rfactorsare converged to R=0.059 and Rw=0.056 for 553 independent observed reflections. Themolecules are linked by van der Waals forces and an intramolecular hydrogen bond is present betweenO2 and N1 atoms. The ring system displays a deviation from planarity. Crystal structure salen Schiff bases salicyladi-mine 2004 06 26 79 83 https://ijsts.shirazu.ac.ir/article_2836_518c42d15f9615f14bef4ff3e2274ca2.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 M. SHAMS LAHIJANI G. M. GHORBANI The deleterious effects of morphine sulphate addiction on the central nervous system are welldocumented. Previous studies have shown that the passage of morphine from the placenta barrier caninfluence the normal development of embryos, such as those of humans, by specific mechanisms. So, forthe first time, for the purpose of investigating the effects of morphine sulphate on pregnant animals,three groups (control, sham and experimental) of Sprague-Dawley female rats were chosen and 0.1, 0.2and 0.3 mg/ml of morphine sulphate were administered orally in drinking water to each female rat (n=5-7) in four experimental groups in weeks 1, 2, 3 and 3 weeks of pregnancy. Caesarean sections wereperformed at the end of the gestation period; foetuses (n=27-63) and their placentas were examinedexternally; the number of foetuses and their resorption sites were also recorded. Results showed that 0.1,0.2 and 0.3 mg/ml of morphine sulphate causes significant increase in the percentage of teratogenicity(except in week 3) (p<0.05). Although 0.1mg/ml of morphine did not have any effect on the diameterand weight of the placenta and the number of foetuses, 0.2 and 0.3 mg/ml of morphine caused asignificant decrease (p<0.05) in the weight and diameter of placentas, the number of the embryos, theirbody weight and crown-rump length of fetuses. The foetal weight of all four groups decreasedsignificantly (p<0.05). These results also showed that teratogenic effects of oral administration ofmorphine in rats mostly happens in week two (organogenesis) of embryonic development. morphine teratogenicity sprague-dawley rats embryo 2004 06 26 85 96 https://ijsts.shirazu.ac.ir/article_2837_665fcdd8a5ffc3f0119ea532edb0d9a5.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 M. J. ZAMIRI A. REZAEI-ROODBARI The relationship between blood physiological attributes and carcass characteristics wasstudied in 40 randomly selected 8-month-old ram lambs of Ghezel and Mehraban (20 rams per breed)sheep. One day before slaughter, blood samples were obtained after a 24 hr fast. Serum samples wereassayed for glucose, cholesterol, serum urea nitrogen (SUN), total protein, albumin, triglycerides,creatinine, and calcium and magnesium ion concentrations. Dry matter, crude protein, crude fat (etherextract) and ash were determined in carcass soft tissues (carcass without bone and tail fat). Overall,serum cholesterol (r=-0.70; P<0.01) and creatinine (r=-0.48; P<0.05) concentrations were negativelycorrelated with the crude protein percentage of soft tissues dry matter (CPDM) in these sheep. Serumcholesterol concentration was positively correlated with the total dissected fat in both Ghezel (r=0.83;P<0.01) and Mehraban sheep (r=0.60; P<0.01). CPDM was negatively (P<0.01) correlated with a serumglucose concentration in Ghezel (r=-0.60), and with a SUN concentration in Mehraban (r=-0.60). Apositive correlation was also found between the serum cholesterol concentration and crude fat (etherextract) as a percentage of the soft tissues dry matter in Ghezel (r=0.66; P<0.01). In general, fewercarcass traits in Mehraban were significantly correlated with cholesterol, and the coefficients weregenerally smaller than those for the Ghezel breed. The regression equations showed that bloodcholesterol, glucose, triglyceride and SUN could be regarded as good predictors of carcasscharacteristics in Ghezel sheep. Serum cholesterol concentration was the only blood attribute that wasretained in equations for Mehraban sheep. The coefficients of determination for Mehraban sheep weremuch smaller than those for Ghezel. More research with a larger number of animals is needed beforethey find application in carcass evaluation. Blood attributes Sheep carcass characteristics Mehraban Ghezel 2004 06 26 97 106 https://ijsts.shirazu.ac.ir/article_2838_f91db88b5f3efbf7f12663a4f6ea516b.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 S. KHOEI B. GOLIAEI A. NESHASTEH-RIZ Many cell lines, when cultured under proper conditions, can form three dimensionalstructures called multicellular spheroids. These spheroids resemble in vivo tumor models in severalaspects. Therefore, studying growth characteristics and behavior of spheroids is beneficial inunderstanding the behavior of tumors under various experimental conditions. In this work, we havestudied the growth properties, along with the thermal characteristics of spheroids of DU 145 humanprostate carcinoma cell lines and compared the results to monolayer cultures of these cells. For thispurpose, the DU 145 cells were cultured either as monolayer or spheroids. At various times afterinitiation of cultures, the growth properties of spheroids as a function of seeding cell number wasdetermined. To evaluate the thermal characteristics of spheroids, they were heated at various stages ofgrowth at 43 °C for various periods. The thermal response was judged by the survival fraction of colonyforming cells in spheroids or monolayer culture following heat treatment. The results showed spheroidswere more resistant to heat than monolayer cultures at all stages of development. However, the extent ofthis thermal resistant was dependent on the age, and consequently, the size of the spheroid. The resultsuggests that the differential thermal resistance of the spheroid cultures develop gradually during thegrowth of spheroid cultures of DU 145 cell line. Hyperthermia multicellular spheroids thermal resistance DU 145 prostate cell line 2004 06 26 107 116 https://ijsts.shirazu.ac.ir/article_2839_00704f6ae6082a79c8120eef9331d781.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 K. NIKOOKAR A. MORADSHAHI M. KHARATI Dunaliella salina was isolated from Maharlu salt lake in Shiraz, Iran, and was analyzed forthe effects of salinity stress on its growth, pigment content and ascorbate peroxidase activity. Growth,expressed as number of cells ml-1, which was most rapid at 2 M NaCl, was reduced at salinity extremes.During the exponential phase of growth, increasing salinity from 0.5 to 4 M NaCl increased Chl a from0.3 to 0.9 pg cell-1, while β-carotene was decreased from 3.6 to 2.4 pg cell-1 and Chl b remainedunchanged. At stationary phase, increasing salinity increased the pigment content of cells. β-carotenecontent per cell reached its highest value of 10.1 pg at 4 M NaCl. Maximum β-carotene to total Chl ratioof 7.4 was obtained at 2 M NaCl. The TLC chromatogram of pigments extracted from cells at theexponential phase of growth resembled that of spinach leaves while the chromatogram of pigmentsextracted from cells at the stationary phase resembled that of carrot and commercial β-carotene. Asignificant increase in ascorbate peroxidase activity was observed with increasing salinity from 1 to 4 MNaCl. It is suggested that increased capacity to scavenge ROS may help to optimize algal biomass and β-carotene production. Dunaliella salina Isolation Salinity β-carotene ascorbate peroxidase 2004 06 26 117 25 https://ijsts.shirazu.ac.ir/article_2840_b46cac30258b65c9c1d68e1179ff885a.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 J. SAHEBI M. R. RAHIMINEJAD A. GHAHREMAN This study concerns the taxonomic status of Hordeum marinum sensu lato in Iran. Itsgeographical distribution in Iran has been reported. Based on the morphological study, the taxoncontains two subspecies: marinum and gussoneanum (Parl.) Thell. in Iran. Morphological descriptionsalong with a key separating the two subspecies are provided. Furthermore, morphological variations ofthe subspecies of Hordeum marium Hudson in various habitats have been studied. In order to facilitateidentifications, three photographs and drawings illustrating the herbarium specimens have beenprovided. Poaceae triticeae hordeum marinum s. l Iran 2004 06 26 127 135 https://ijsts.shirazu.ac.ir/article_2841_137d5515224904a80c27d92319efa4af.pdf

2004-06-26 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 M. YOUSOFI A. ARYAVAND Flow cytometry (FCM) was used to determine the ploidy levels of six different populationsof Agropyron cristatum (L.) Gaertn. (Poaceae) in Iran, using a diploid cultivated barley (Hordeumvulgare L.) as an internal reference. According to flow cytometric data, tetraploid (2n = ± 28) andhexaploid (2n = ± 42) levels were detected among the examined populations and these results weresupported by chromosome counting on the same materials included in this study. The mean nuclearDNA content (2C value) of the populations were then estimated, ranging from 26.41 to 27.56 pg for twovarieties of Agropyron cristatum subsp. pectinatum, and 43.47 pg for Agropyron cristatum subsp.incanum. The relationships between morphological variations observed among the taxa and ploidy levelswere also discussed. Flow cytometry ploidy determination nuclear DNA content agropyron cristatum 2004 06 26 137 144 https://ijsts.shirazu.ac.ir/article_2842_913f653f32a6b16a75cc0ba9a4b9e03a.pdf

2004-06-20 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 H. ESHGHI Z. GORDI A. KHANLARKHANI A facile and efficient method for the preparation of 1, 1-diacetates of aldehydes is improved.P2O5/SiO2 catalyzed 1, 1-diacetates formation from aldehydes in dry media. Advantages of this methodare the use of an inexpensive and selective catalyst with high yields in simple operation and shortreaction time under solvent-free conditions. 1 1-Diacetates phosphorous pentoxide protection Aldehydes silica gel 2004 06 20 145 148 https://ijsts.shirazu.ac.ir/article_2846_446631b4817bccfa7a1a521010e7cf9e.pdf

2004-06-20 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 B. HAGHIGHI M. AKMALY Interaction of glucose 6-phosphate dehydrogenase from S. aureofaciens with NAD+, NADP+and glucose 6-phosphate were investigated using different fluorescent probes. Binding of NAD+, NADP+and S-NADPH to the native enzyme quenched intrinsic protein fluorescence by 100%, 10% and 21%,respectively, from which Kd values of NAD+ (6.5 mM), NADP+ (92.0 μM) and S-NADPH (122.0 μM)were calculated. Binding of NAD+, NADP+ and S-NADPH to the pyridoxylated enzyme in whichpyridoxal 5`-phosphate occupied a glucose 6-phosphate site, quenched the fluorescence of the pyridoxalgroup on the enzyme by 20%, 57% and 96%, respectively. Kd values for the pyridoxylated enzyme werealso calculated for NAD+ (1.0mM), NADP+ (301.0μM) and S-NADPH (151.0μM). When NAD+ wasbound to the native enzyme-S-NADPH complex, to which S-NADPH was bound to only one subunitleaving the other free, the S-NADPH fluorescence was quenched with a 10 nm blue shift in its emissionspectrum. NADP+ binding, however, enhanced S-NADPH fluorescence. The fluorescence of S-NADPHbound to the pyridoxylated enzyme was enhanced upon NAD+ binding with a 5 nm blue shift, whileNADP+ binding had no effect. A substrate analog, glucose 1-phosphate, inhibited the enzymecompetitively with respect to glucose 6-phosphate and uncompetitively with respect to NAD+. Bindingof NAD+ to enzyme-glucose 1-phosphate complex quenched protein fluorescence (44%) with decreasingKd value from 6.5 mM in the absence of glucose 1-phosphate to 2.2 mM in its presence. NADP+,however, showed opposite effects. The data demonstrated that S.aureofaciens glucose 6-phosphatedehydrogenase undergoes different conformational changes upon NAD+ and NADP+ binding, andmodification of glucose 6-phosphate binding site by pyridoxal 5`-phosphate pulls the enzyme in aconformation suitable for NAD+ binding. Glucose 6 phosphate dehydrogenase streptomyces aureofaciens pyridoxal phosphate 2004 06 20 149 160 https://ijsts.shirazu.ac.ir/article_2847_14fe2d983a7bfd352b3ba14b8c90258e.pdf

2004-06-20 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 T. ESLAMZADEH B. NASERNEJAD B. BONAKDAR POUR A. ZAMANI M. ESMAAIL BYGI The removal of copper (II), zinc (II), and chromium (III) from wastewater by carrot residues(CR) was investigated to evaluate cation exchange capacity. The effects of solution pH and co- ions werestudied in batch experiments. Adsorption equilibria were initially rapidly established, and then decreasedmarkedly after 10 min. Column experiments were carried out in a glass column filled with CR toevaluate the metal removal capacity. The influences of the feed concentration and feed rate were alsostudied in order to compare the dynamic capacity for metal binding in different feed concentrations. Carrot residues heavy metals metal binding and removal 2004 06 20 161 167 https://ijsts.shirazu.ac.ir/article_2848_531bd71482c753f9535d5a5bb2c8c04f.pdf

2004-06-20 10.22099

Iranian Journal of Science and Technology (Sciences) Transaction A: Science 1028-6276 1028-6276 2004 28 1 S. AKBARI A. T. LAW M. SHARIFF The acute toxicity of a Malaysian crude oil to red snapper, Lutjanus argentimaculatus, blacktiger shrimp and Penaeus monodon were investigated. The animals were exposed to water solublefractions (WSF) of crude oil in a flow-through bioassay system and the toxicants were analyzed by gaschromatography (GC) and gas chromatography and mass spectrometer (GC-MS). The 96 h LC50 valuesof the WSF of crude oil for fish and shrimp were 3.24 ± 0.21 and 8.52 ± 0.89 ppm of WSF of crude oil,respectively. In this investigation, the fish were more sensitive to crude oil than the shrimp, with respectto the similarity in their habitations. Crude oil acute toxicity fish shrimp 2004 06 20 169 175 https://ijsts.shirazu.ac.ir/article_2849_902e0f05d1a5cd4c284bf0c7252988f6.pdf