نتایج جستجو برای: b ratio

تعداد نتایج: 1352626  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی خاتم الانبیاء (س) بهبهان - دانشکده منابع طبیعی 1392

چکیده این تحقیق در بخشی از سامان عرفی شوراب چنار بگالی استان لرستان که بلوط ایرانی (quercus brantii lindl.) گونه غالب جنگل های آن است صورت پذیرفت. در مطالعه ی حاضر به منظور بررسی تاثیر عوامل توپوگرافی (ارتفاع از سطح دریا، شیب و جهت زمین) بر فاکتورهای تاج پوشش، مساحت تقریبی 1500 هکتار انتخاب گردید. سپس تعداد 147 قطعه نمونه مستطیلی به ابعاد 20 ×10 متر با استفاده از شبکه آماربرداری منظم - تصادفی ...

M Kaleemulla S Doddamani,

This research work presents the study on fracture behavior of Al6061 with graphite particulate composite produced by the stir casting technique. The materials selected for the proposed work is Al6061 and graphite particles. Compact tension (CT) specimens were utilized to determine fracture toughness for different thickness of composite. In the present work, optimizing the parameters of the comp...

Adebayo Liasu Ogunkanmi, Bola O Oboh, Chibuisi Gideon Alimba, Khalid Olajide Adekoya,

Background: There is unprecedented increase in the processing and packaging of many plant materials into food supplements, herbal medicine, skincare and cosmetic products for human needs. Baphia nitida is used for topical skincare products. Toluene, a toxic aromatic solvent, is increasingly being used in the production of these skincare and cosmetic products in many industries. This study ass...

Journal: :آب و خاک 0
مجتبی مقبلی محسن فرحبخش ناصر برومند

introduction: boron (b) is an essential plant micronutrient whose soil availability is influenced by many soil factors.understanding the processes controling activity of boron (b) in the soil solution is important for soil fertility management. the reaction of adsorption and desorption of boron in soil determines the amount of boron that is available to plants. adsorption–desorption processes p...

Jamshid Mohammadi-Rovshandeh, Kamel Ekhlasi-Kazaj Majid Abdouss, Mohammad Imani Sayed Mehdi Hoseini

In this work, new biodegradable ABCBA type pentablock copolymers with different mole ratio of L-lactide and PPDO-b-PEG-b-PPDO triblock copolymer were synthesized and characterized. In the first step, PPDO-b-PEG-b-PPDO triblock copolymer was synthesized via a ring-opening polymerization of P-DiOxanone (PDO) monomer with Poly (Ethylene Glycol) (P...

A Nahar , M.A Hanif, M.A.B Siddik, M.Reaz. Chaklader,

The aim of this study was to report the size structure of finescale razorbelly minnow, Salmostoma phulo in the Payra River, Southern Bangladesh, based on length-frequency distribution (LFD), sex ratio (SR), length-weight relationships (LWR), length-length relationships (LLR), condition factors (allometric KA; Fulton’s, KF; relative, KR and relative weight, WR) and form factor (a3.0). A to...

A. Madandar , A. Behroozirad , H. Ghariblu,

This paper concerns the design and analysis, of a ball type continuously variable transmission, (B-CVT). This B-CVT has a simple kinematic structure, and same as a toroidal CVT, transmits power by friction on the contact points between input and output discs, that are connected to each other by balls. After, a brief introduction of our B-CVT structure, the performa...

2002
Hai-Yang Cheng

We study the two-body and three-body charmful baryonic B decays: B 0 → Λc p̄ and B → Λc p̄ π(ρ). The factorizable W -exchange contribution to B 0 → Λc p̄ is negligible. Applying the bag model to evaluate the baryon-to-baryon weak transition matrix element, we find B(B → Λc p̄) <∼ 1.1 × 10−5|gB0pΣ+b /6| 2 with gB0pΣ+ b being a strong coupling for the decay Σ+b → B 0 p and hence the predicted branchi...

Journal: :iranian journal of toxicology 0
chibuisi gideon alimba department of zoology, university of ibadan, ibadan, nigeria. khalid olajide adekoya department of cell biology and genetics, university of lagos, akoka, nigeria. adebayo liasu ogunkanmi department of cell biology and genetics, university of lagos, akoka, nigeria. bola o oboh department of cell biology and genetics, university of lagos, akoka, nigeria.

background: there is unprecedented increase in the processing and packaging of many plant materials into food supplements, herbal medicine, skincare and cosmetic products for human needs. baphia nitida is used for topical skincare products. toluene, a toxic aromatic solvent, is increasingly being used in the production of these skincare and cosmetic products in many industries. this study asses...

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