نتایج جستجو برای: عمرسنجی کربن 14

تعداد نتایج: 368969  

ژورنال: دانش آب و خاک 2012
فایز رئیسی مریم ریاحی

چرای مرتع توسط دام ممکن است به طور مستقیم و غیر مستقیم سبب ایجاد تغییراتی در ویژگی‌های خاک و در نتیجه رشد و فعالیت میکروب­های خاک، و زیست توده میکروبی آن گردد. این مطالعه با هدف بررسی نقش مدیریت مرتع (قرق و چرا) بر کربن و نیتروژن ، زیست توده میکروبی در مراتع طبیعی استان چهارمحال و بختیاری انجام شد. سه مدیریت مرتع شامل الف) قرق، ب) چرای تحت کنترل و ج) چرای آزاد (مفرط) در مجاورت یکدیگر در سه منطق...

Journal: :Plastic and Reconstructive Surgery - Global Open 2020

Journal: :Clinical linguistics & phonetics 2014
Laura Zampini Paola Zanchi Laura D'Odorico

This study aimed to assess the communicative skills of children and young adults with ring 14 syndrome and linear 14q deletions, investigating the relationships among their language development and their genetic, clinical, psychomotor and behavioural characteristics. Participants were 36 individuals with chromosome 14 aberrations whose parents completed a questionnaire, specifically developed i...

Journal: :Journal of medical genetics 1984
B Dallapiccola G Ferranti A Giannotti G Novelli L Pasquini B Porfirio

Mosaic trisomy 14 is described in a patient with severe developmental retardation and congenital malformations. Together with a few previous reports, this case suggests the existence of a syndrome associated with this chromosome imbalance. Hitherto unrecognised manifestations of trisomy 14 mosaicism were, in our patient, abnormalities of the neutrophil nuclei, which consisted of multiple pedunc...

Journal: :Molecular bioSystems 2012
Richard J Edwards Norman E Davey Kevin O'Brien Denis C Shields

Many of the specific functions of intrinsically disordered protein segments are mediated by Short Linear Motifs (SLiMs) interacting with other proteins. Well known examples include SLiMs that interact with 14-3-3, PDZ, SH2, SH3, and WW domains but the true extent and diversity of SLiM-mediated interactions is largely unknown. Here, we attempt to expand our knowledge of human SLiMs by applying i...

2017
Jana Krtková Jennifer Xu Marco Lalle Melissa Steele-Ogus Germain C. M. Alas Alexander R. Paredez

2005
Nader Saemian Gholamhossein Shirvani Hojatollah Matloubi

Tricyclic ring systems, possessing the dibenzo structure joined to the central seven membered heterocyclic ring with a basic side chain, have been a rich source of biologically active molecular entities and frequently show effects on the central nervous system [10]. The precise mechanism of action of these compounds is not known [2]. Therefore to further elucidate the mechanism of action and to...

Journal: :Journal of chromatographic science 2008
Tao Xu Jian Pan Lingli Zhao

A rapid and sensitive silver ion high-performance liquid chromatographic (Ag[I]-HPLC) method is developed for the simultaneous determination of the biologically active diterpenoids andrographolide, 14-deoxy-11,12-didehydroandrographolide, 14-deoxyandrographolide, and neoandrographolide in Andrographis paniculata Nees. HPLC is carried out for determining andrographolide and its derivatives with ...

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