نتایج جستجو برای: β 0143

تعداد نتایج: 177583  

In this study, β-cyclodextrin(β-CD) supported, hydroxyapatite encapsulated γ-Fe2O3 (γ-Fe2O3@HAp@β-CD) was successfully prepared and evaluated as a solid-liquid phase transfer catalyst and also a molecular host system and nanoreactor for the nucleophilic ring-opening of epoxides in water for the preparation of β-azido alcohols, β-nitro alcohols, an...

Journal: : 2022

Chi Weigela, thuộc họ Kim ngân (Caprifoliaceae) được sử dụng rộng rãi trong y học cổ truyền tại các nước châu Á. Các hợp chất saponin phân lập từ chi Weigela có nhiều hoạt tính sinh mạnh như kháng oxy hóa, viêm và ung thư. Nghiên cứu đã tạo cao chiết ethanol loài florida “Jean’s Gold” bằng phương pháp xuất hỗ trợ vi sóng. Hai tách dựa trên sắc ký hiện đại. Cấu trúc hóa của này xác định là olean...

Journal: :Annales de l'I.H.P 2021

The Widom–Rowlinson model (or the Area-interaction model) is a Gibbs point process in Rd with formal Hamiltonian defined as volume of ∪x∈ωB1(x), where ω locally finite configuration points and B1(x) denotes unit closed ball centred at x. also tuned by two other parameters: activity z>0 related to intensity inverse temperature β≥0 strength interaction. In present paper we investigate phase trans...

Journal: :Natural Product Communications 2021

Two new spirostane glycosides, named polygokingiaside A (1) and B (2), 6 known (25 R)-26- O-( β-d-glucopyranosyl)-furost-5-en-3 β,22 α,26-triol 3- O-β-d-glucopyranosyl-(1→4)- β-d-galactopyranoside (3), S)-26- O-β-d-glucopyranosyl-(1→2)- β-d-glucopyranosyl-(1→4)- (4), (5), (23 S,25 R)-spirostan-5-en-3 β,23-dihydroxy-12-one-3- (6), (24 β,24-dihydroxy-12-one-3- (7), β-hydroxy-12-one-3- (8), were i...

Journal: :Structural Chemistry 2023

In the present paper, we report crystal structures of four types ([A(1)H][A(2)H]Y, [A(1)H]3[A(2)H]Y2, A(1)H[A(2)H···A(2)]Y, and A(1)H[A(1)H···A(2)]Y) mixed salts containing sulfate anion (Y = SO42−) amino acids A, i.e., sarcosine (Sar), dimethylglycine (DMG), betaine (Bet), β-alanine (β-Ala), l-proline (l-Pro): (β-AlaH)(DMGH)SO4·2H2O (I), (β-AlaH)(BetH)SO4 (II), (β-AlaH)(l-ProH)SO4 (III), (BetH...

Journal: :jundishapur journal of microbiology 0
shahla mansouri department of microbiology, school of medicine, kerman university of medical sciences, kerman, ir iran davood kalantar neyestanaki department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran; department of microbiology, school of medicine, tehran university of medical sciences, tehran, ir iran. tel/fax:+98-2188955810 mostafa shokoohi physiology research center, kerman university of medical sciences, kerman, ir iran shahnaz halimi department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran reza beigverdi department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran fereshteh rezagholezadeh department of microbiology, school of medicine, tehran university of medical sciences. tehran, ir iran

background: extended spectrum β-lactamases (esbls) and ampc β-lactamases enzyme are major sources of resistance to β-lactam antibiotics especially in enterobacteriaceae such as escherichia coli and klebsiella pneumoniae. increasing frequency of the co-existence of esbls with ampc-β-lactamases in bacteria is a serious threat for treating bacterial infections. conclusions: outbreak of isolates co...

During recent years, there was growing demand in using microalga valuable products such as β-carotene in health care. β-Carotene has anti-cancer and anti-aging properties for human. In Dunaliella salina cells, β-carotene has a major protecting role for biomolecules, when the production of reactive oxygen species elevated. In the present study, we investigated the influence of the four most effe...

Journal: :Applied Organometallic Chemistry 2021

Sonochemical procedure was used to synthesize Co/β-cyclodextrin complex. For the first time, Fe/β-cyclodextrin complex also synthesized in alkaline media. Moreover, β-cyclodextrin modified by citric acid (CA) and reacted with metal salts under ultrasonic irradiation. The prepared catalysts were characterized using EDX, UV–vis FTIR analytical techniques. highest incorporation of into observed cr...

Journal: :iranian journal of allergy, asthma and immunology 0
cui-cui duan key laboratory of dairy science, ministry of education, northeast agricultural university, harbin 150030, china ai-li li key laboratory of dairy science, ministry of education, northeast agricultural university, harbin 150030, china li-jie yang key laboratory of dairy science, ministry of education, northeast agricultural university, harbin 150030, china rui zhao key laboratory of dairy science, ministry of education, northeast agricultural university, harbin 150030, china wen-guang fan key laboratory of dairy science, ministry of education, northeast agricultural university, harbin 150030, china gui-cheng huo key laboratory of dairy science, ministry of education, northeast agricultural university, harbin 150030, china

cow’s milk allergy is one of the most common food allergies in childhood. beta- lactoglobulin (β-  lg) is  a dominant  allergen in  cow’s milk. hydrolysis is  known as  an effective method to reduce the allergenicity of proteins. thus, the objective of this study was to compare the allergenicity of β-lg and its hydrolysates using an animal model. twenty four balb/c mice were divided into three ...

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