检索结果-南通市图书馆

Food Production, Processing and Nutrition 2021年第1期3卷 80-91页

作者： u.c.urbizo-reyes J.E.Aguilar-Toalá A.M.Liceaga Protein chemistry and Bioactive Peptides Laboratory Department of Food SciencePurdue University745 Agriculture Mall DriveWest LafayetteIN 47907USA

Rising consumer concerns with synthetic drugs to treat non-communicable diseases(NcDs)have promoted a shift towards using natural biological active constituents that offer similar health *** canary seed(Phalaris canariensis L)is an emerging crop traditionally used in Mexico to treat *** liberated during simulated digestion of canary seed protein are believed to be responsible for their biological activity;however,no studies have shown the effect of controlled protein hydrolysis using commercial proteases on canary seed protein’s biological ***,this study aimed to explore the in vitro antihypertensive,antidiabetic,and anti-obesity activity of canary seed peptides derived from proteolysis with Alcalase®.Protein fractions were primarily composed of prolamins(54.07±1.8%),glutelins(32.19±3.18%),globulins(5.97±0.52%)and albumins(5.97±0.52%).Thections showed the highest inhibition capacity(pconverting enzyme(Ic50=0.028–0.032 mg/mL)lipase(Ic50=2.15–2.27 mg/mL),α-glucosidase(Ic50=0.82–1.15 mg/mL),and dipeptidyl-peptidase-IV(Ic50=1.27–1.60 mg/mL).Additionally,these peptide fractions showed high antioxidant activity against DPPH(134.22–150.66μmol TE/mg)and ABTS(520.92–813.33μmol TE/mg).These results provide an insight into the potential development of functional foods using commercial enzymatic hydrolysis of canary seed proteins for treating hypertension,type-2 diabetes,and obesity.

关键词： canary seeds Bioactive peptides Anti-obesity activity Antihypertensive activity Antidiabetic activity

Semi-solid near-net shape rheocasting of heat treatable wrought aluminum alloys

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of china 2010年第9期20卷 1719-1724页

作者： u.A.c uRLE Materials Science and Manufacturing Council for Scientific and Industrial Research

Flexibility of the cSIR-RcS, induction stirring with simultaneous air cooling process, in combination with high pressure die casting is successfully demonstrated by semi-solid rheocasting of plates performed on commercial 2024, 6082 and 7075 wrought aluminum alloys. Tensile properties were measured for the above mentioned rheocast wrought aluminum alloys in the T6 condition. The results showed that tensile properties were close to or even in some cases exceeded the minimum specifications. The yield strength and elongation of rheocast 2024-T6 exceeded the minimum requirements of the wrought alloy in the T6 condition but the ultimate tensile strength achieved only 90% of the specification because the Mg content of the starting alloy was below the commercial alloy specification. The strengths of rheocast 6082-T6 exceeded all of the wrought alloy T6 strength targets but the elongation only managed 36% of the required minimum due to porosity, caused by incipient melting during solution heat treatment, and the presence of fine intermetallie needles in the eutectic. The yield strength of rheocast 7075 exceeded the required one and the ultimate tensile strength also managed 97% of the specification; while the elongation only reached 46% of the minimum requirement also due to incipient melting porosity caused during the solution heat treatment process.

关键词： high pressure die casting (HPDc) aluminum alloys as-cast condition T6 treatment incipient melting

Genome-wide identification and in silico gene expression analysis of the related to ABI3/VP1(RAV)transcription factor family in barley(Hordeum vulgare L.)

在线全文

学校读者我要写书评

暂无评论

BIOcELL 2021年第6期45卷 1673-1685页

作者： cÜNEYT uÇARLI Department of Molecular Biology and Genetics Istanbul UniversityIstanbul34134Turkey

RAV(Related to ABI3/VP1)transcription factors are unique members of the AP2-ERF superfamily with AP2 and B3 domains and play important roles in the regulation of seed germination,plant growth,and stress *** the study,7 RAV genes,named HvRAVs,were identified in barley based on the available genome *** five of the seven HvRAVs were located on chromosome 3,HvRAV5 and HvRAV7 were located on chromosome 1 and 4,*** of the predicted HvRAVs were intron-less,except HvRAV2,which had one *** proteins have shown basic,instable,and hydrophilic *** AP2 domain specific RAYD and WLG motifs were detected in all HvRAV ***,B3 repression domain,R/KLFGV,is also found in the c-terminal of *** were found to have stress-related cis-acting elements,including MYB,MYc,and ***2 was predicted to have no GARE motifs,TATcccA or TAAcAA(G/A),and *** drought conditions,the expression level of HvRAVs did not significantly change in a drought-sensitive barley genotype,whereas HvRAV5 and HvRAV7 were dramatically down-regulated in a drought-tolerant *** of HvRAV5 was also inhibited by ***7 was strongly induced by plant pathogen *** HvRAV6 was induced by exogenous gibberellin application and during the germination ***,HvRAV6 transcript was detected higher than other HvRAVs in all stress and control conditions as well as during *** silico analyses have shown that HvRAVs play a role in response to different abiotic and biotic stresses as well as in plant ***,the extensive biological roles of HvRAV genes in plant development and in response to abiotic and biotic stresses need further investigation.

关键词： Barley RAV AP2 domain B3 domain AP2/ERF family cis-acting elements

Sources and Deficiency Diseases of Mineral Nutrients in Human Health and Nutrition:A Review

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Pedosphere 2014年第1期24卷 13-38页

作者： u.c.GuPTA S.c.GuPTA Agriculture and Agri-canada canada Crops and Livestock Research Centre The Department of Plastic Surgery Loma Linda University

Mineral nutrients are fundamentally metals and other inorganic compounds. The life cycle of these mineral nutrients begins in soil, their primary source. Soil provides minerals to plants and through the plants the minerals go to animals and humans; animal products are also the source of mineral nutrients for humans. Plant foods contain almost all of the mineral nutrients established as essential for human nutrition. They provide much of our skeletal structure, e.g., bones and teeth. They are critical to countless body processes by serving as essential co-factors for a number of enzymes. Humans can not utilize most foods without critical minerals and enzymes responsible for digestion and absorption. Though mineral nutrients are essential nutrients, the body requires them in small, precise amounts. We require them in the form found in crops and they can be classified into three different categories： major, secondary, and micro or trace minerals. This classification is based upon their requirement rather than on their relative importance. Major minerals such as potassium （K） and phosphorus （P） are required in amounts of up to 10 g d-1. The daily requirement of secondary and micro minerals ranges from 400 to 1 500 mg d-1 and 45 ~tg d-1 to 11 mg d-1, respectively. To protect humans from mineral nutrient deficiencies, the key is to consume a variety of foods in modest quantities, such as different whole grains, low fat dairy, and different meats, vegetables and fruits. For insurance purposes, a supplement containing various mineral nutrients can be taken daily.

关键词： deficiency diseases deficiency symptoms origin recommended daily dose toxicity

Effect of benzaldehyde on the electrodeposition and corrosion properties of Ni–W alloys

在线全文

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2015年第10期22卷 1060-1066页

作者： u.Pramod Kumar c.Joseph Kennady Department of chemistry Karunya Institute of Technology and SciencesKarunya NagarCoimbatore 641114Tamil NaduIndia

The effect of different concentrations of benzaldehyde on the electrodeposition of Ni–W alloy coatings on a mild steel substrate from a citrate electrolyte was investigated in this study. The electrolytic alkaline bath(p H 8.0) contained stoichiometric amounts of nickel sulfate, sodium tungstate, and trisodium citrate as precursors. The corrosion resistance of the Ni–W-alloy-coated specimens in 0.2 mol/L H2SO4 was studied using various electrochemical techniques. Tafel polarization studies reveal that the alloy coatings obtained from the bath containing 50 ppm benzaldehyde exhibit a protection efficiency of 95.33%. The corrosion rate also decreases by 21.5 times compared with that of the blank. A higher charge-transfer resistance of 1159.40 ?·cm2 and a lower double-layer capacitance of 29.4 μF·cm-2 further confirm the better corrosion resistance of the alloy coating. X-ray diffraction studies reveal that the deposits on the mild steel surface are consisted of nanocrystals. A lower surface roughness value(Rmax) of the deposits is confirmed by atomic force microscopy.

关键词： nickel–tungsten alloys benzaldehyde electrodeposit

Exact solution of Dirac equation for Scarf potential with new tensor coupling potential for spin and pseudospin symmetries using Romanovski polynomials

在线全文

学校读者我要写书评

暂无评论

chinese Physics B 2014年第9期23卷 71-80页

作者： A.Suparmi c.cari u.A.Deta Physics Department Faculty of Mathematics and Natural ScienceSebelas Maret University Department of Physics Faculty of Mathematics and Natural ScienceState University of Surabaya

The bound state solutions of Dirac equations for a trigonometric Scarf potential with a new tensor potential under spin and pseudospin symmetry limits are investigated using Romanovski polynomials. The proposed new tensor potential is inspired by superpotential form in supersymmetric （SuSY） quantum mechanics. The Dirac equations with trigonometric Scarf potential coupled by a new tensor potential for the pseudospin and spin symmetries reduce to Schrtdinger-type equations with a shape invariant potential since the proposed new tensor potential is similar to the superpotential of trigonometric Scarf potential. The relativistic wave functions are exactly obtained in terms of Romanovski polynomials and the relativistic energy equations are also exactly obtained in the approximation scheme of centrifugal term. The new tensor potential removes the degeneracies both for pseudospin and spin symmetries.

关键词： Scarf potential new tensor potential spin and pseudospin symmetries Romanovski polynomials

Experimental study on the microstructural and anti-corrosion behaviour of co-deposition Ni-co-SiO_2 composite coating on mild steel

在线全文

学校读者我要写书评

暂无评论

Defence Technology（防务技术） 2018年第1期14卷 64-69页

作者： c.u.Atuanya D.I.Ekweghiariri c.M.Obele Department of Metallurgical and Materials Engineering Nnamdi Azikiwe UniversityAwkaAnambra StateNigeria Department of Polymer and Textile Engineering Nnamdi Azikiwe UniversityAwkaAnambra StateNigeria

Mild steel is commonly used in the construction of Pipeline. The major problem of this Pipeline is corrosion. Effort is make my researchers to combat this problem. In this work co-deposition of Ni-coSiO_2 composite coating on mild steel was reported with the view to reduce this problem. The SiO_2 was varies from 5 to 25 wt% in the deposition. The microstructure, hardness values and potentiodynamic polarization in simulated sea water were determined. The results show that XRD pattern of the Ni co deposited mild steel revealed the presence hard phases of NiO, co_5Ni, co_2Ni_3, Ni co5 while that of Ni-coSiO_2 deposited mild steel revealed the presence harder phases of NiOSiO_2, coNi_7Si_2, co_5Ni_2Si_3. The Nico-25 SiO_2 deposited sample has smaller particle size than Ni-10 co coating. coating thickness of 110.7 mm was obtained for Ni-10 co coating, while coating thickness of 135.7, 157.7, 165.0 mm were obtained at Ni-10 co-x SiO_2(x=10, 15, 25 wt%). 99.90% corrosion resistance was achieved at Ni-co-25 SiO_2. This improvement in corrosion resistance after composites coating could be attributed to the hard and fine structure obtained after coating.

关键词： co-deposition corrosion Microstructure and coating

Tumor organoids to study gastroesophageal cancer: a primer

在线全文

学校读者我要写书评

暂无评论

Journal of Molecular cell Biology 2020年第8期12卷 593-606页

作者： Ramon u.Jin Jason c.Mills Division of Oncology Department of Internal MedicineWashington University School of MedicineSt.LouisMO 63130USA Division of Gastroenterology Department of Internal MedicineWashington University School of MedicineSt.LouisMO 63130USA Department of Developmental Biology Washington University School of MedicineSt.LouisMO 63130USA Department of Pathology and Immunology Washington University School of MedicineSt.LouisMO 63130USA

Gastroesophageal cancers are leading causes of cancer *** attempts at adopting molecularly based treatment approaches have been slow and ineffective even though we begin to identify specific targetable gene mutations and *** is dear that we should no longer treat all gastroesophageal cancers as a homogeneous disease,which is what we do when we use nonspecific ***,we currently cannot monitor successful gene/pathway targeting,nor understand how/when tumors develop resistance,nor predict which patients will derive maximal *** improve outcomes,we must precisely detail the heterogeneity of these tumors to then individualize cancer therapy as well as develop novel avenues to study and predict treatment effects in individual *** this end,patient-derived organoids,in which tumor cells from individual patients are grown in a Petri dish,are a new versatile system that allows for timely expandability,detailed molecular characterization,and genetic manipulation with the promise of enabling predictive assessment of treatment *** this review,we will explore the development and basic techniques for organoid generation,and discuss the current and potential future applications of this exciting technology to study the basic science of carcinogenesis and to predict/guide cancer patient care in the clinics.

关键词： targeted therapy precision oncology cancer model tumor heterogeneity cancer evolution personalized medicine

Safety and effectiveness of the SuPRAcOR presbyopic LASIK algorithm on hyperopic patients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Eye and Vision 2016年第1期3卷 253-262页

作者： Robert Edward T.Ang Emerson M.cruz Alex u.Pisig Maria Luisa Patricia c.Solis Rosalie Mae M.reyes Gerhard Youssefi Asian Eye Institute 8th Floor PHINMA PlazaRockwell CenterMakati City 1200Philippines Department of Ophthalmology Cardinal Santos Medical Center10 Wilson St.Greenhills WestSan Juan CityPhilippines TEcHNOLAS PerfectVision GmbH A Bausch&Lomb CompanyMesserschmittstrasse 1-3Munich 80992Germany

Background:To evaluate the safety and effectiveness of the Supracor excimer laser algorithm to treat hyperopic presbyopic patients using laser in-situ keratomileusis(LASIK).Methods:This is a retrospective case review of patients diagnosed with hyperopia(Sphere≥+0.0 D and presbyopia reading add≥1.0 D)who underwent Supracor excimer laser treatment on at least one eye for presbyopia correction from year May 2011 to May *** vision was further analyzed after patients were subdivided into three groups:Group A(n=22 eyes,11 patients)had Supracor on both eyes;Group B(n=18 eyes,18 patients)had Supracor in one eye and hyperopic LASIK on fellow eye;and Group c(n=29 eyes,29 patients)had Supracor in one eye and no treatment on the fellow ***:This study evaluated 58 patients wherein 69 eyes underwent Supracor presbyopic ***,mean manifest refraction spherical equivalent(MRSE)of all eyes that underwent Supracor was+1.37±0.72 D with mean uncorrected distance visual acuity(uDVA),uncorrected intermediate visual acuity(uIVA),and uncorrected near visual acuity(uNVA)of 20/50(0.35 logMAR),20/50(0.35 logMAR),and J9(0.61 logMAR),*** 6 months postoperatively,mean MRSE was−0.43±0.59 D with mean uDVA,uIVA and uNVA of 20/25(0.13 logMAR),20/20(0.01 logMAR),and J1(0.05 logMAR),*** of two lines of best-corrected distance visual acuity(BcDVA)was seen in 6%of *** corneal steepening of 1.0 D at the 3 mm zone and 0.7 D in the 5 mm zone was *** vertical coma increased from−0.02 to+0.10 while mean 4th order spherical aberration became more negative from 0.20 to−*** binocular uDVA,uIVA,and uNVA are 20/20,20/20 and J1,respectively,in all treatment groups at the 6 month postoperative *** significant differences in binocular uDVA(p≥0.36),uIVA(p≥0.19)and uNVA(p≥0.56)among groups were ***:Supracor excimer laser algorithm is safe and effective for the treatment of presbyopia in *** and bil

关键词： Presbyopia LASIK Supracor Hyperopia

Inter-relationship of Various Results in Analysis of （14.0 MeV／u） Pb＋Pb Reaction using Mica and cN-85 Track Detectors

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

chinese Physics Letters 2005年第1期22卷 69-71页

作者： F.N.Khattak E.u.Khan TabassumNasir J.J.Baluch F.u.Khan u.W.c. GomalUniversityDeraIsmailKhanPakistan RadiationPhysicsDivision PINSTECHNiloreIslamabadPakistan DepartmentofPhysics GomalUniversityDeraIsmailKhanPakistan

Two detector materials mica and cellulose-nitrate(cN)-85 have been used to study (14.0MeV/u) Pb + Pb reaction. Events of different multiplicities were registered in mica and cN-85 detectors using the 2π-geometry technique of solid state nuclear track detection. After removing the target material from the detectors the damaged trails in the detectors were revealed as tracks by proper chemical etching. The irradiated area of each sample was scanned and events of different multiplicities were traced. The binary events were bifurcated into elastic and inelastic events. The elastic binary events and three prong events, observed in the reaction, have been used to search out coefficients cμν in the presence of both the detectors, for the reaction under study. using these coefficients 3- and 4-prong events have been analysed. From the detailed analysis of the results of (14.0MeV/u) Pb+Pb reaction, obtained from mica and cN-85 track detectors we observed a great resemblance of results obtained from the two detectors. combining the results of both the detectors, we report some important outcomes.

关键词： cN-85轨迹探测器高能物理学铅原子碰撞反应固态