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2022 ◽  
Vol 228 ◽  
pp. 107144
Author(s):  
Zeyang Song ◽  
Tiancheng He ◽  
Maorui Li ◽  
Dejian Wu ◽  
Fei You

2022 ◽  
Vol 10 (3) ◽  
pp. 735-749
Author(s):  
Yu Jia ◽  
Sudong Hua ◽  
Liying Qian ◽  
Xiaojian Ren ◽  
Jie Zuo ◽  
...  

Agronomy ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 99
Author(s):  
Deanna S. Scheff ◽  
James F. Campbell ◽  
Franklin H. Arthur

The lesser grain borer, Rhyzopertha dominica (F.), is a highly diverse feeder and widely distributed throughout the United States in agricultural and non-agricultural landscapes. Six four-funnel Lindgren traps were deployed in feed mill, grain elevator, and native prairie landscapes, to determine the most attractive food and pheromone combination (attractant) and patterns in seasonal captures. Traps were baited with combinations of wheat (crimped, high moisture, pre-fed) with or without an R. dominica specific aggregation pheromone in 2017 and 2018. Traps were deployed for 48 h, collected, and the number of R. dominica counted. Rhyzopertha dominica was captured among all landscapes with all attractants. There was a significant correlation between temperature and R. dominica captures, with peak captures occurring during the warmest months. Significantly more R. dominica adults were captured in traps containing the pheromone. In 2017, pheromone traps captured 818% more R. dominica and 543% more than in 2018. The pheromone component in the trap was more attractive than any natural stored wheat condition and should be included in future studies. Understanding the seasonal patterns and changes in capture rates in agricultural and non-agricultural landscapes may be useful in determining times of increased immigration pressure into the newly harvested grain.


2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Malgorzata Matusiak

Abstract This work concerns the comfort-related properties of seersucker woven fabrics made of cotton. Seersucker woven fabrics are characterized by alternating puckered and flat strips in the warp direction. Some researchers consider that due to this structure seersucker fabrics are characterized by very good comfort-related properties. In this work seersucker fabrics with differing repeats of the seersucker effect and different weft yarns were investigated in intense heat and high moisture transfer. Results showed that the structural factors significantly influence the comfort-related properties of the investigated cotton fabrics.


2021 ◽  
Vol 6 (12) ◽  
pp. 179
Author(s):  
Dansani Vasanthan Muttuvelu ◽  
Erik Kjems

This paper is a literature review focused on permeable pavements and especially the permeable subbase material. Run-off water from the surface is traditionally let through a drainage system, and the roads are kept dry. Due to climate changes, heavy precipitation and high-intensity rainfalls are putting pressure on the infrastructure. Traditionally, water in subbase materials reduces the resilient E-moduli and the lifespan of the pavement design. Studies show that increasing saturation reduces the bearing capacity of a traditional subbase material. Unbound materials with highly grained fines and high moisture content have higher tendency to show reduced resilient E-moduli. One study was found where the E-moduli of five different coarse grained aggregates used in permeable pavements were examined through a triaxial test. It was found that the E-moduli varied from 110–371 MPa. Other studies examining the E-moduli of permeable subbases based on moisture content were not found. However, this paper discusses different experiences regarding the bearing capacity of traditional vs. permeable subbase materials. It also covers a discussion and an analysis of missing research areas that needs to be investigated for further knowledge about the usage of permeable pavements in areas with a risk of flooding.


2021 ◽  
Vol 16 (2) ◽  
pp. 131
Author(s):  
Nurhayati Nurhayati ◽  
Dina Fransiska ◽  
Agusman Agusman

Caulerpa racemosa merupakan rumput laut hijau dengan kandungan air yang tinggi sehingga mudah mengalami kerusakan. Penyimpanan dalam suhu beku merupakan salah satu cara untuk memperpanjang masa simpan suatu produk. Namun, pembekuan produk juga dapat menyebabkan terjadinya berbagai perubahan yang tidak dikehendaki. Penelitian ini bertujuan untuk menganalisis pengaruh penyimpanan pada suhu beku terhadap karakteristik kimia dan fisik C. racemosa, drip, dan filtrat yang dihasilkan. Sampel berupa C. rasemosa disimpan dalam ruangan penyimpan beku (cold storage) dan diamati setiap minggunya hingga minggu ke-4. Parameter uji yang diamati meliputi rendemen, komposisi proksimat, kadar garam, uji warna (L*, a*, b*), dan viskositas, masing-masing pada C. racemosa yang ditiriskan, drip, dan filtrat C. racemosa. Hasil penelitian menunjukkan bahwa penyimpanan beku C. racemosa dapat mengurangi berat pada sampel akhir karena sebagian besar drip keluar setelah pelelehan/thawing, yaitu sekitar 77,88-84,81%. Karakteristik fisik maupun kimia C. racemosa yang disimpan selama 1 hingga 4 minggu tidak berbeda nyata antar waktu penyimpanan, namun berbeda nyata pada C. racemosa tanpa disimpan beku, yaitu pada kadar air, abu, dan garam.ABSTRACTCaulerpa racemosa is a green seaweed that has a high moisture content, so it is easily damaged. Frozen storage is one way to extend the shelf life of a product. However, freezing the product can cause various undesirable changes to occur. This study was aimed to analyze the effect of storage at freezing temperature on the chemical and physical characteristics of C. racemosa, drip, and the resulting filtrate. C. racemosa samples were stored in cold storage and observed every week until the 4th week. The test parameters observed were yield, proximate composition, salt content, color (L*, a*, b*), and viscosity on drained C. racemosa, drip, and C. racemosa filtrate. The results showed that frozen storage of C. racemosa could cause weight loss in the final sample because most of the drip came out after thawing, which was around 77.88 - 84.81%. Physical and chemical characteristics of C. racemosa stored for 1 to 4 weeks were not significantly different from unfrozen C. racemosa, i.e. water, ash, and salt content.


2021 ◽  
pp. 142-153
Author(s):  
Guédé Séri Serge ◽  
Adombi Caroline Mélanie ◽  
Touré Abdoulaye

Mango processing in Côte d'Ivoire is limited by data failure on characteristics of mango varieties. The purpose of this work is to contribute to the valorization of the main varieties of mango (Amelie, Kent and Keitt) cultivated in Côte d'Ivoire through the evaluation of their morphological, physical and biochemical parameters. Between May and June 2020, ten ripe fruits of each variety were randomly selected from ten batches of mangoes from different producers in the Poro region. After sampling, morphological, physical and biochemical parameters were determined at the biochemistry - microbiological laboratory of Peleforo Gon Coulibaly University in the month of June 2020. This study showed that the mangoes Kent and Amelie were bigger than those of Keitt. However, when ripe, the three mango varieties studied had each a specific gravity close to 1 g/cm3; they could therefore float on water. They were elongated in shape and corresponded to the caliber group B of mangoes exportable to the European market. The high values of pulp proportions (82.70 to 83.62%), pulp/stone ratios (12.71 to 13.33) and waste indices (4.69 to 5.20) gave them interesting aptitudes for industrial processing. With high moisture contents (77.80 to 84.80%), low fiber contents (0.53 to 0.84%) and acidity values (0.20 to 0.50%), interesting ascorbic acid contents (45.02 to 46.25 mg/100g ), TSS contents (15.51 to 18.50 °Brix) conforming to standard for fruit juices and nectars, the mango varieties studied would be suitable for making puree, juice or ice cream. However, with a higher sugars/acidity ratio (73.46), mango variety Kent would be more suitable for drying and making frozen or canned mango pieces; while those of Amelie and Keitt would be suitable for the manufacture of purees, concentrates and drinks. The results of this study could guide processors in the choice of varieties according to the types of derived products. They are interesting and should be deepened by including other varieties (improved and local) cultivated in Côte d'Ivoire.


Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2505
Author(s):  
Miranda C. Sikora ◽  
Ronald D. Hatfield ◽  
Kenneth F. Kalscheur

Fractionation of alfalfa (Medicago sativa L.) into leaves and stems can reduce cutting frequency while producing a high-value feedstuff. A difficulty with fractionation is the higher moisture content at ensiling due to the inability to wilt leaves without substantial dry matter loss or financial cost. To evaluate whether the silage quality of fractionated alfalfa is competitive with conventional methods under long-term storage conditions, high-moisture leaves (250–280 g·kg−1 dry matter, DM) and stems (190–240 g·kg−1 DM) were ensiled for 21 and 350 days and compared to wilted whole-plant silage for two alfalfa developmental stages. At 21 days, leaf and whole-plant silage fermentation characteristics indicated suitable lactic acid bacterial fermentation through decreased pH, high lactic acid–to-acetic acid ratio, and a lack of clostridial fermentation. At 350 days, leaf silage fermentation and nutritional quality decreased due to sustained proteolysis, but true protein still exceeded that of whole-plant silage. High-moisture stem fractions fermented poorly; at 21 days, stage 3 stems had significant amounts of butyric acid, while stage 5 stems became clostridial at 350 days. Long-term storage of high-moisture leaf silages can produce good-quality silage despite exceeding moisture contents typically recommended for alfalfa, while wilting is required for stem silages.


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