نتایج جستجو برای: respectively basing on different preprocessing (snv

تعداد نتایج: 9226144  

Journal: :مهندسی بیوسیستم ایران 0
سامان آبدانان مهدی زاده دانشگاه رامین خوزستان سعید مینایی دانشگاه تربیت مدرس محمد امیر کریمی ترشریزی دانشگاه تربیت مدرس عزالدین مهاجرانی دانشگاه شهید بهشتی تهران

the potential of vis-ir (400–1100 nm) transmittance method to assess the internal quality (freshness) of intact chicken egg during storage at a temperature of 307 oc and 25% 4 relative humidity was investigated. one hundred chicken egg samples were used for measuring its freshness and spectral collection during egg storage times (up to 30 days). two correlation models between haugh unit (hu) an...

Journal: :Bioresources 2023

Alfalfa hay plays a decisive role in the quality and safety of livestock products. Chemical analytical methods for alfalfa hays are laborious, time-consuming, costly. Therefore, suitable required rapid accurate detection hay. This study evaluated feasibility infrared spectroscopy (IR) identifying different hays. 105 samples under three drying were analysed. Results indicated that full spectra m...

2015
Lu Xu Hai-Yan Fu Chen-Bo Cai Yuan-Bin She

Dampening during processing or storage can largely influence the quality of white lotus seeds (WLS). This paper investigated the feasibility of using near-infrared (NIR) spectroscopy and chemometrics for rapid and nondestructive discrimination of the dampened WLS. Regular (n = 167) and dampened (n = 118) WLS objects were collected from five main producing areas and NIR reflectance spectra (4000...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت دبیر شهید رجایی - دانشکده علوم انسانی 1392

this study investigated the impact of explicit instruction of morphemic analysis and synthesis on the vocabulary development of the students. the participants were 90 junior high school students divided into two experimental groups and one control group. morphological awareness techniques (analysis/synthesis) and conventional techniques were used to teach vocabulary in the experimental groups a...

Journal: :Journal of agricultural and food chemistry 2012
Lidia Esteve Agelet Paul R Armstrong Ignacio Romagosa Clariana Charles R Hurburgh

Four near-infrared spectrophotometers, and their associated spectral collection methods, were tested and compared for measuring three soybean single-seed attributes: weight (g), protein (%), and oil (%). Using partial least-squares (PLS) and four preprocessing methods, the attribute that was significantly most easily predicted was seed weight (RPD > 3 on average) and protein the least. The perf...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شهرکرد - دانشکده ادبیات و علوم انسانی 1389

current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...

2016
N. Sreedhar Reddy

Nondestructive method of measuring the internal quality of citrus fruits was developed using fourier transform near-infrared (FT-NIR) spectroscopy. Also the models describing the relationship between quality attributes and the NIR spectra of the fruits were developed and evaluated. Diffuse reflectance measurements (12500–3600 cm -1 ) and biochemical measurements were performed individually on e...

Journal: :علوم باغبانی 0
مقیمی مقیمی آق خانی آق خانی سازگارنی سازگارنی سرمد سرمد

abstract the assessment of ripeness is a major part of quality evaluation and depends on several factors such as soluble solid content (ssc), acidity and firmness. most of the methods that measure these qualities are destructive. so it is essential to develop an efficient and nondestructive method for measuring internal attributes of fruit. the objective of this study was to investigate visible...

2016
Xiaoli Li Yuying Zhang Yong He

This paper investigated the feasibility of Fourier transform infrared transmission (FT-IR) spectroscopy to detect talcum powder illegally added in tea based on chemometric methods. Firstly, 210 samples of tea powder with 13 dose levels of talcum powder were prepared for FT-IR spectra acquirement. In order to highlight the slight variations in FT-IR spectra, smoothing, normalize and standard nor...

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