نتایج جستجو برای: sample using cochran

تعداد نتایج: 3627630  

Journal: :Investment management & financial innovations 2023

Small and medium-sized enterprises (SMEs) have several critical challenges that threaten their capacity to survive thrive. However, access awareness digital platform is fundamental moderate the financial costs develop productivity sustain SMEs financially. Considering this, purpose of this study get empirical information on level management usage platforms in South Africa. The methodological fr...

Journal: :پژوهش و برنامه ریزی روستایی 0
یوسف قنبری احمد حجاریان رحیمه انصاری فاطمه کیانی

the purpose of this study was to identify and determine the role of rural women in agricultural activities and to identify factors influencing women's participation in these activities are. research methods - descriptive and analytical survey is used to collect information and library studies. statistical study of 4200 rural women above 15 years of city form and volume samples using the formula...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده علوم 1388

abstract sensitive and precise voltammetric methods for the determination of trace amounts of furaldehydes, mainly as furfural (f) and 5-hydroxymethyl-2-furaldehyde (hmf), in waste waters and other matrices is described. determination of total furaldehyde at < ?g g-1 levels in alkaline buffered aqueous media was individually investigated. by the use of ordinary swv and adsorptive square wave ...

Journal: :Journal of Proteomics & Bioinformatics 2008

Journal: :Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry 1968

The objective of this study was to examine the evaluation of training courses applied in succession planning in organizations using the CIPP model. This was an applied research in terms of purpose and descriptive-survey in terms of data gathering type. Statistical population of the study included 100 employees of Chamber of Commerce, of which a sample size of 80 people were selected using the r...

Journal: :International Journal of Analytical Chemistry 2023

Use of smartphone-based spectroscopy is showing a constant growth since last year. It presents the advantage being widely available for everyone. The most important thing that it still low-cost method adapted to education context. However, as all analytical methods, should be validated ensure reliability its results. In this study, we present steps validation process with statistical tests appl...

A new simple and reliable method for rapid and selective extraction and determination of trace levels of Zn(II) ion is developed. Zn(II) ions are adsorbed quantitatively during passage of aqueous samples through PET-AA/AAm nano fiber modified. Almost all matrix elements were found to pass through the nano fiber to drain. Modified Poly (ethylene terephthalate)-grafted-Acrylic acid/Acryl amide Na...

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