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1. Design of Electromagnetic Vibration-Type Single-Bud Sugarcane Seed Metering Device

Author:
He, Fengguang; Deng, Ganran; Li, Ming; Niu, Zhaojun; You, Xiao
Source:
Sugar tech 2019 v.21 no.5 pp. 815-824
ISSN:
0972-1525
Subject:
sowing,   etc   ; buds; seeds; sugarcane;     Show all 4 Subjects
Abstract:
... The objectives of this research were to solve the problem that the existing sugarcane seed metering device had high per cent of damaged seeds and omission rate. An electromagnetic vibration-type single-bud sugarcane seed metering device was designed. It made use of the characteristic of vibrating automatic metering to avoid damaging buds. And it could be adjusted to different sowing speeds by sett ...
DOI:
10.1007/s12355-019-00715-y

2. Pre-crystallization process in chocolate: Mechanism, importance and novel aspects

Author:
Pirouzian, Haniyeh Rasouli; Konar, Nevzat; Palabiyik, Ibrahim; Oba, Sirin; Toker, Omer Said
Source:
Food chemistry 2020 v.321 pp. 126718
ISSN:
0308-8146
Subject:
sowing,   etc   ; chocolate; cocoa butter; confectionery industry; ingredients; tempering; ultrasonic treatment;     Show all 7 Subjects
Abstract:
... Pre-crystallization is an important step in the production of chocolate, which is defined as tempering of cocoa butter through primary and secondary nucleation. The goal of tempering is to obtain a sufficient amount of βV polymorph of the right size. The pre-crystallization process has a great impact on the quality and production cost of final product. Development of chocolate technology requires ...
DOI:
10.1016/j.foodchem.2020.126718

3. Segmentation and counting algorithm for touching hybrid rice grains

Author:
Tan, Suiyan; Ma, Xu; Mai, Zhijie; Qi, Long; Wang, Yuwei
Source:
Computers and electronics in agriculture 2019 v.162 pp. 493-504
ISSN:
0168-1699
Subject:
sowing,   etc   ; algorithms; hybrids; rice; wavelet;     Show all 5 Subjects
Abstract:
... The ability to segment and count of touching hybrid rice grains can enable the automatic evaluation of seeding performance. In this paper, an algorithm that separates and counts touching rice grain, which consists of the watershed algorithm, an improved corner point detection algorithm, and neural network classification algorithm, is presented. To reduce the over-segmentation regions caused by the ...
DOI:
10.1016/j.compag.2019.04.030

4. Field scale row unit vibration affecting planting quality

Author:
Zhai, Changyuan; Long, John; Taylor, Randal; Weckler, Paul; Wang, Ning
Source:
Precision agriculture 2020 v.21 no.3 pp. 589-602
ISSN:
1385-2256
Subject:
sowing,   etc   ; accelerometers; equations; no-tillage; planters; planting; rowcrops; standard deviation; vibration;     Show all 9 Subjects
Abstract:
... With recent developments allowing increased planter speeds, improving spatial uniformity of crop emergence will continue to be an important focus of research. Vertical vibration during planting usually interferes with the seed metering and delivery process, and thereby affects seeding quality. Two different row crop planters were instrumented with accelerometers to monitor vertical vibration of pl ...
DOI:
10.1007/s11119-019-09684-4

5. Row-crop planter performance to support variable-rate seeding of maize

Author:
Virk, S. S.; Fulton, J. P.; Porter, W. M.; Pate, G. L.
Source:
Precision agriculture 2020 v.21 no.3 pp. 603-619
ISSN:
1385-2256
Subject:
sowing,   etc   ; Zea mays; corn; data collection; planting; rowcrops; seeds; yield mapping;     Show all 8 Subjects
Abstract:
... Current planting technology possesses the ability to increase crop productivity and improve field efficiency by precisely metering and placing crop seeds. Planter performance depends on determining and utilizing optimal settings for different planting variables such as seed depth, down pressure, and seed metering unit. The evolution of “Big Data” in agriculture today brings focus on the need for q ...
DOI:
10.1007/s11119-019-09685-3

6. High performance SSZ-13 membranes prepared at low temperature

Author:
Qiu, Heng'e; Zhang, Ye; Kong, Lin; Kong, Xue; Tang, Xiaoxue; Meng, Danni; Xu, Ning; Wang, Mingquan; Zhang, Yanfeng
Source:
Journal of membrane science 2020 v.603 pp. 118023
ISSN:
0376-7388
Subject:
sowing,   etc   ; ambient temperature; artificial membranes; autoclaves; carbon dioxide; crystallization; crystals; energy; seeds; zeolites;     Show all 10 Subjects
Abstract:
... Conventional hydrothermal synthesis usually generates thick zeolite membranes in the range of 2–10 μm, which lead to high diffusion resistance and low permeance. The synthesis of ultrathin zeolite membranes (thickness<1 μm) is extremely desirable but a great challenge. Ultrathin SSZ-13 membranes with thickness 0.4–0.7 μm were prepared by conventional hydrothermal synthesis at low temperature. The ...
DOI:
10.1016/j.memsci.2020.118023

7. Development and performance evaluation of an electro-hydraulic downforce control system for planter row unit

Author:
Jing, Huirong; Zhang, Dongxing; Wang, Yunxia; Yang, Li; Fan, Chenlong; Zhao, Huihui; Wu, Hailiang; Zhang, Yaohui; Pei, Jingchun; Cui, Tao
Source:
Computers and electronics in agriculture 2020 v.172 pp. 105073
ISSN:
0168-1699
Subject:
sowing,   etc   ; Zea mays; algorithms; corn; field experimentation; germination; planting; seeds; soil compaction; soil quality;     Show all 10 Subjects
Abstract:
... To avoid the issues of uneven germination and undesired soil compaction associated with the changing soil conditions, this paper presented the design of an electro-hydraulic downforce control system for planter row units. The control system deployed a PID (Proportional-Integral-Derivative) closed-loop algorithm to control planting downforce exerted on the gauge wheel in response to varying soil co ...
DOI:
10.1016/j.compag.2019.105073

8. Effects of lead ions on germination, initial growth, and physiological characteristics of Lolium perenne L. species and its bioaccumulation potential

Author:
Gholinejad, Bahram; Khashij, Shima; Ghorbani, Farshid; Bandak, Isa; Farajollahi, Asghar
Source:
Environmental science and pollution research international 2020 v.27 no.10 pp. 11155-11163
ISSN:
0944-1344
Subject:
sowing,   etc   ; Lolium perenne; bioaccumulation; carotenoids; chlorophyll; germination; heavy metals; ions; lead; roots; shoots; soil; vigor;     Show all 13 Subjects
Abstract:
... The present study was conducted to investigate the responses of Lolium perenne L. species to lead ions. To do this, the effects of lead ions at five levels: control (blank), 250, 500, 750, and 1000 mg/kg or mg/L (depending on germination in the soil or petri dish) on the germination, initial growth, and physiological characteristics of Lolium perenne were investigated. The results showed that the ...
DOI:
10.1007/s11356-019-06766-8

9. Simulation and parameter optimisation of a centrifugal rice seeding spreader for a UAV

Author:
Wu, Zhijun; Li, Mengliang; Lei, Xiaolong; Wu, Zhenyuan; Jiang, Chengkun; Zhou, Long; Ma, Rongchao; Chen, Yong
Source:
Biosystems engineering 2020 v.192 pp. 275-293
ISSN:
1537-5110
Subject:
sowing,   etc   ; Oryza sativa; crop yield; field experimentation; propellers; rice; seeds; unmanned aerial vehicles; variance;     Show all 9 Subjects
Abstract:
... A centrifugal rice seeding spreader with a baffle ring was designed for an unmanned aerial vehicle (UAV). Rice seeds ejected by a rotating disc are caused to rebound by a baffle ring, to produce a non-hollow, fan-shaped distribution at field level. Three factors produce influences on the distribution, and they are the rotation of the disc, UAV flying height and the angle of the baffle ring. The di ...
DOI:
10.1016/j.biosystemseng.2020.02.004

10. The effect of dissolved oxygen concentration on long-term stability of partial nitrification process

Author:
Cui, Bin; Yang, Qing; Liu, Xiuhong; Huang, Siting; Yang, Yubing; Liu, Zhibin
Source:
Journal of environmental sciences (China) 2020 v.90 pp. 343-351
ISSN:
1001-0742
Subject:
sowing,   etc   ; DNA; ambient temperature; ammonia; ammonium; bacteria; batch systems; dissolved oxygen; nitrification; nitrites; oxidation; sludge;     Show all 12 Subjects
Abstract:
... Dissolved oxygen (DO) concentration is regarded as one of the crucial factors to influence partial nitrification process. However, achieving and keeping stable partial nitrification under different DO concentrations were widely reported. The mechanism of DO concentration influencing partial nitrification is still unclear. Therefore, in this study two same sequencing batch reactors (SBRs) cultivate ...
DOI:
10.1016/j.jes.2019.12.012

11. Interfacial Free Energy and Tolman Length of Curved Liquid–Solid Interfaces from Equilibrium Studies

Author:
Montero de Hijes, P.; Espinosa, Jorge. R.; Bianco, Valentino; Sanz, Eduardo; Vega, Carlos
Source:
Journal of physical chemistry 2020 v.124 no.16 pp. 8795-8805
ISSN:
1932-7455
Subject:
sowing,   etc   ; Gibbs free energy; bubbles; liquid-solid interface; liquids; probability; vapors;     Show all 7 Subjects
Abstract:
... In this work, we study by means of simulations of hard spheres the equilibrium between a spherical solid cluster and the fluid. In the NVT ensemble, we observe stable/metastable clusters of the solid phase in equilibrium with the fluid, representing configurations that are global/local minima of the Helmholtz free energy. Then, we run NpT simulations of the equilibrated system at the average press ...
DOI:
10.1021/acs.jpcc.0c00816

12. Synthesis of nano-sheets seeds for secondary growth of highly hydrogen permselective ZIF-95 membranes

Author:
Ma, Xixi; Li, Yanhong; Huang, Aisheng
Source:
Journal of membrane science 2020 v.597 pp. 117629
ISSN:
0376-7388
Subject:
sowing,   etc   ; artificial membranes; carbon dioxide; ceramics; coatings; colloids; coordination polymers; hydrogen; nanosheets; nitrogen; porosity; seeds;     Show all 12 Subjects
Abstract:
... Recently, more and more attentions have been focused on the preparation of metal-organic framework (MOF) membranes for gas or liquid separations. However, it is rather difficult to prepare a dense MOF membrane by a direct solvothermal synthesis route because of poor heterogeneous nucleation of MOF on the native ceramic support surface. Chemical modifications or seeds coating are usually carried ou ...
DOI:
10.1016/j.memsci.2019.117629

13. Are we close enough? Comparing prairie reconstruction chronosequences to remnants following two site preparation methods in Missouri, U.S.A.

Author:
Newbold, Chris; Knapp, Benjamin O.; Pile, Lauren S.
Source:
Restoration ecology 2020 v.28 no.2 pp. 358-368
ISSN:
1061-2971
Subject:
sowing,   etc   ; adaptive management; chronosequences; grasses; herbicides; indicator species; plant communities; site preparation; tallgrass prairies; Missouri;     Show all 10 Subjects
Abstract:
... Prairie reconstruction has become a common method for reestablishing tallgrass prairie communities in the central United States. With the objective of creating plant communities that approximate remnant (reference) prairies, managers are interested in identifying: (1) best methods for reconstructing reference community conditions; (2) the rate of change in plant communities through time following ...
DOI:
10.1111/rec.13078

14. Fagopyrins in different parts of common buckwheat (Fagopyrum esculentum) and Tartary buckwheat (F. tataricum) during growth

Author:
Kim, Jaecheol; Hwang, Keum Taek
Source:
Subtropical plant science 2020 v.86 pp. 103354
ISSN:
0889-1575
Subject:
sowing,   etc   ; Fagopyrum esculentum; Fagopyrum tataricum; anthraquinones; buckwheat; flowers; hypericin; leaves; stems;     Show all 9 Subjects
Abstract:
... Fagopyrins, anthraquinone derivatives present in buckwheat, are structurally similar to hypericin. The objective of this study was to determine changes of fagopyrins in flowers, leaves, and stems of common buckwheat (Fagopyrum esculentum; CB) and Tartary buckwheat (F. tataricum; TB) during growth. Flowers, leaves, and stems of buckwheats were collected until the 50th day after sowing (DAS) at inte ...
DOI:
10.1016/j.jfca.2019.103354

15. Towards the integration of lean principles and optimization for agricultural production systems: a conceptual review proposition

Author:
Caicedo Solano, Nestor E; García Llinás, Guisselle A; Montoya‐Torres, Jairo R
Source:
Journal of the science of food and agriculture 2020 v.100 no.2 pp. 453-464
ISSN:
0022-5142
Subject:
sowing,   etc   ; decision making; farmers; harvesting; mathematical models; planning; sustainable agriculture; waste management; wastes;     Show all 9 Subjects
Abstract:
... Operative planning in agricultural production has historically had the objective of improving yields and quality. Sowing, cropping, and harvesting are usually treated independently, and waste and the sustainability of operations are generally not integrated into operational planning methodologies for agricultural production. This study shows the need to have a clear and precise methodology to mini ...
DOI:
10.1002/jsfa.10018

16. Plant Selection by Bumble Bees (Hymenoptera: Apidae) in Montane Riparian Habitat of California

Author:
Cole, Jerry S.; Siegel, Rodney B.; Loffland, Helen L.; Elsey, Erin A.; Tingley, Morgan B.; Johnson, Matthew
Source:
Environmental entomology 2020 v.49 no.1 pp. 220-229
ISSN:
0046-225X
Subject:
sowing,   etc   ; Bombus; flowers; habitats; meadows; mountains; phenology; planting; riparian areas; species richness; summer; California;     Show all 12 Subjects
Abstract:
... Many bumble bee species (Bombus Latreille) have declined dramatically across North America and the globe, highlighting the need for a greater understanding of the habitat required to sustain or recover populations. Determining bumble bee species' plant selection is important for retaining and promoting high-quality plant resources that will help populations persist. We used nonlethal methods to sa ...
DOI:
10.1093/ee/nvz159

17. Theca cells can support bovine oocyte growth in vitro without the addition of steroid hormones

Author:
Yang, Yinghua; Kanno, Chihiro; Sakaguchi, Kenichiro; Katagiri, Seiji; Yanagawa, Yojiro; Nagano, Masashi
Source:
Theriogenology 2020 v.142 pp. 41-47
ISSN:
0093-691X
Subject:
sowing,   etc   ; androstenedione; blastocyst; cattle; coculture; culture media; follicular development; metaphase; oocytes; steroid hormones; steroidogenesis; viability;     Show all 12 Subjects
Abstract:
... Theca cells (TCs) are essential to folliculogenesis by contributing to steroidogenesis. However, the in vitro growth (IVG) of oocytes co-cultured with TCs has not yet been examined. In the present study, we investigated the feasibility of the IVG of bovine oocyte-cumulus-granulosa cell complexes (OCGCs) co-cultured with TCs and the developmental competence of co-cultured oocytes. OCGCs and TCs wer ...
DOI:
10.1016/j.theriogenology.2019.09.037

18. Effects of shape feature on compression characteristics and crack rules of maize kernel

Author:
Su, Yuan; Cui, Tao; Zhang, Dongxing; Xia, Guoyi; Gao, Xiaojun; He, Xiaowei; Xu, Yang
Source:
Journal of food processing and preservation 2020 v.44 no.1 pp. e14307
ISSN:
0145-8892
Subject:
sowing,   etc   ; Zea mays; agroecology; corn; cracking; energy; equipment; harvesting; hybrids; mechanical properties; product quality; seeds;     Show all 12 Subjects
Abstract:
... The physical and compression properties were analyzed for three kernel shapes of hybrid maize, Dika 517 and Denghai 618, grown under the same agroecological conditions. The average forces required to rupture the kernels of Dika 517 and Denghai 618 were 150.35 ± 80.90 N and 161.74 ± 86.16 N, respectively, and the average kernel rupture energies were 134.25 ± 50.77 mJ and 137.78 ± 58.35 mJ, respecti ...
DOI:
10.1111/jfpp.14307

19. Optimal scheduling and sequencing for large-scale seeding operations

Author:
Ahsan, Zaid; Dankowicz, Harry
Source:
Computers and electronics in agriculture 2019 v.163 pp. 104728
ISSN:
0168-1699
Subject:
sowing,   etc   ; algorithms; models; planters; system optimization; tanks;     Show all 6 Subjects
Abstract:
... We consider a scheduling and sequencing optimization problem with application to an agricultural seeding operation. The problem is motivated by potential deployment of a recently proposed mobile seed refilling system in large-scale field operations. In this setting, mobile refiller vehicles are used to minimize any interruptions to seeding that result from the need to refill the seed tanks on the ...
DOI:
10.1016/j.compag.2019.01.052

20. Mapping temperature and confinement dependence of carbyne formation within carbon nanotubes

Author:
Deng, Yichen; Cranford, Steven W.
Source:
Carbon 2019 v.141 pp. 209-217
ISSN:
0008-6223
Subject:
sowing,   etc   ; carbon; carbon nanotubes; models; polymers; temperature;     Show all 6 Subjects
Abstract:
... Single atomistic chains of carbon – a.k.a. carbyne – are of great interest due to their attractive properties. One route of proposed synthesis is exploiting the interior of a carbon nanotube, enabling sufficient alignment and affable temperature conditions for chain growth. Here, we delineate the optimal conditions for growth by means of full atomistic modeling of sequential carbon reactions insid ...
DOI:
10.1016/j.carbon.2018.09.054