Trial Field Implementation of Piezoelectric Sensing Technique for In-Place Concrete Evaluation

2021 ◽  
Vol 118 (1) ◽  
Keyword(s):  
Trial Field

scholarly journals Weed infestation in the crop rotations depending on the cultivation technology in the Crimea

2020 ◽  
Author(s):  
K.G. Zhenchenko ◽  
◽  
E.N. Turin ◽  
A.A. Gongalo ◽  
V.Yu. Ivanov ◽  
...  
Keyword(s):  
Crop Rotations ◽  
High Quality ◽  
Perennial Weeds ◽  
Trial Field ◽  
The Crimea ◽  
Weed Infestation ◽  
Cultivation Technology ◽  
Winter Crops ◽  
The Comparative Study ◽  
Direct Sowing

The stationary experiment on the comparative study of the direct sowing and traditional cultivation technology was laid in 2015–2016 at the trial field of the FSBSI “Research Institute of Agriculture of Crimea”. Two five-course crop rotations were taken as a base; all fields were included in the crop rotation. During the years of research, we observed mixed weed infestation. No matter what cultivation technology was applied, actual weed flora at the fields with winter crops was represented by overwintering and winter weeds; at the fields with spring crops – annual spring weeds. There were no rootstock grasses and rhizomatous perennial weeds or there were few of them at all fields in the experimental crop rotations both by traditional cultivation technology and direct sowing. Timely and high-quality weed control put the direct sowing on equal footing with the traditional one. It is advisable to change herbicides, their doses, as well as use tank mixes, after moving to a direct sowing system.

scholarly journals Using the CVP Traffic Detection Model at Road-Section Applies to Traffic Information Collection and Monitor - the Case Study

2019 ◽  
Vol 1 (2) ◽  
Author(s):  
Shing Tenqchen ◽  
Yen-Jung Su ◽  
Keng-Pin Chen
Keyword(s):  
Traffic Flow ◽  
Model Verification ◽  
Traffic Information ◽  
Fiscal Year ◽  
Detection Model ◽  
Road Section ◽  
Trial Field ◽  
Flow Information ◽  
Model Verification And Validation ◽  
Traffic Collection

This paper proposes a using Cellular-Based Vehicle Probe (CVP) at road-section (RS) method to detect and setup a model for traffic flow information (info) collection and monitor. There are multiple traffic collection devices including CVP, ETC-Based Vehicle Probe (EVP), Vehicle Detector (VD), and CCTV as traffic resources to serve as road condition info for predicting the traffic jam problem, monitor and control. The main project has been applied at Tai # 2 Ghee-Jing roadway connects to Wan-Li section as a trial field on fiscal year of 2017-2018. This paper proposes a man-flow turning into traffic-flow with Long-Short Time Memory (LTSM) from recurrent neural network (RNN) model. We also provide a model verification and validation methodology with RNN for cross verification of system performance.

scholarly journals SHINGLE TRACING BY A NEW TECHNIQUE

1978 ◽  
Vol 1 (16) ◽  
pp. 102
Author(s):  
Peter Wright ◽  
J.S. Cross ◽  
N.B. Webber
Keyword(s):  
Field Experiments ◽  
Radioactive Isotopes ◽  
Major Drawback ◽  
Medium Scale ◽  
Tracer Recovery ◽  
Tracer Techniques ◽  
Trial Field ◽  
Metal Detectors ◽  
A New Technique ◽  
Further Development

A major drawback of all existing tracer techniques for monitoring shingle movement, except that of labelling with radioactive isotopes, is that tracer recovery rates are invariably low, (commonly less than 15% of the total injected) because recovery is limited to the beach surface. Investigations were made into the possibilities of developing a new tracer that might overcome this problem. The paper describes the results of, and the conclusions drawn from two trial field experiments carried out using metal tracer pebbles. These had specific gravities, size and shape similar to the indigenous beach pebbles, and were recovered both on and beneath the beach surface using metal detectors. By assessing the relative merits and drawbacks of the technique it was concluded that the use of metal pebbles as tracers for shingle beaches is more practical than other methods for most tracing purposes. At present the technique is best suited to investigations ranging in length from a few days to a few months and requiring small to medium-scale injections of 5000 tracer pebbles or less. The considerable scope for the further development and application of the technique is discussed.

scholarly journals Splice Loss of Graded-Index Fibers: Accurate Semianalytical Descriptions Using Nelder-Mead Nonlinear Unconstrained Optimization with Three-Parameter Fundamental Modal Field

2013 ◽  
Vol 2013 ◽  
pp. 1-8
Author(s):  
Raja Roy Choudhury ◽  
Arundhati Roy Choudhury ◽  
Mrinal Kanti Ghose
Keyword(s):  
Optical Fiber ◽  
Optimization Technique ◽  
Gaussian Function ◽  
Unconstrained Minimization ◽  
Sinc Function ◽  
Modal Parameters ◽  
Graded Index ◽  
Splice Loss ◽  
Trial Field ◽  
Modal Field

A faster and accurate semianalytical formulation with a robust optimization solution for estimating the splice loss of graded-index fibers has been proposed. The semianalytical optimization of modal parameters has been carried out by Nelder-Mead method of nonlinear unconstrained minimization suitable for functions which are uncertain, noisy, or even discontinuous. Instead of normally used Gaussian function, as the trial field for the fundamental mode of graded-index optical fiber a novel sinc function with exponentially and R-3/2 (R is the normalized radius of the optical fiber) decaying trailing edge has been used. Due to inclusion of three parameters in the optimization of fundamental modal solution and application of an efficient optimization technique with simple analytical expressions for various modal parameters, the results are found to be accurate and computationally easier to find than the standard numerical method solution.

GC–ECD analysis of S-metolachlor (Dual Gold) in cotton plant and soil in trial field

2007 ◽  
Vol 143 (1-3) ◽  
pp. 1-7 ◽  
Author(s):  
Pengying Cao ◽  
Fengmao Liu ◽  
Suli Wang ◽  
Yuhong Wang ◽  
Lijun Han
Keyword(s):  
Cotton Plant ◽  
Trial Field

scholarly journals Frontenac Gris as colour-mutant Frontenac grape variety

2021 ◽  
pp. 30-35
Author(s):  
S. I. Krasokhina ◽  
N. V. Matveeva
Keyword(s):  
Agricultural Research ◽  
Clonal Selection ◽  
Economic Value ◽  
Research Centre ◽  
University Of Minnesota ◽  
Grape Variety ◽  
Early Maturity ◽  
Colour Mutant ◽  
Russian Research Institute ◽  
Trial Field

The work aimed to assess the cultivation and breeding prospects of the new Frontenac Gris technical grape variety obtained in 2003 by clonal selection as a colour-mutant Frontenac red technical grape originated by the University of Minnesota, USA. The variety is a complex cross-species hybrid with early maturity in the zone of Novocherkassk, Rostov Region. The variety was studied in 2018-2020 following the common viticulture and winemaking protocols at an experimental plot of the Novocherkassk trial field of All-Russian Research Institute of Viticulture and Winemaking named after Ya.I. Potapenko — Branch of the Federal Rostov Agricultural Research Centre. Vineyards were uncovered, unirrigated, grafted, Berlandieri×Riparia Kober 5BB rootstock, 3×1.5 m planting scheme. Formation as medium-standard double-shouldered horizontal cordon. By combination of economic value and agrobiological traits (cold and winter hardiness, yield, anti-phytopathogen resistance, high wine material quality), the Frontenac Gris variety holds promise in industrial viticulture. It can be recommended for gardening in sufficiently humid cool climates avoiding winter bush sheltering, as well as for breeding. The variety is low-hardy to drought and summer heat, which hinders its growing in the southern country. The variety’s disadvantages are in early maturity and slight berries wilting on bush in dry and windy air, which can pose an issue in juice production from pressed berries.

The effect of alfalfa age on the accumulation of total and soil organic matter when rotating grain crops

2021 ◽  
pp. 26-29
Author(s):  
А.А. Гусейнов ◽  
Г.Н. Гасанов ◽  
М.А. Арсланов ◽  
Х.М. Мирзаева
Keyword(s):  
Organic Matter ◽  
Soil Organic Matter ◽  
Winter Wheat ◽  
Soil Layer ◽  
Organic Mass ◽  
Post Harvest ◽  
Trial Field ◽  
Grain Crop ◽  
The Republic ◽  
Top Mass

Исследования проведены в 2013–2015 годах в ООО «Вымпел 2002» в Хасавюртовском районе Республики Дагестан. Почва экспериментального участка содержит в пахотном слое гумуса 2,77%, Р2О5 — 2,21 мг, К2О — 32,8 мг/100 г почвы, плотность в пахотном слое — 1,24 г/см3, наименьшая влагоёмкость слоя 0–0,6 м — 29,2%. Целью наших исследований являлось выявление влияния возраста люцерны на накопление общей и неотчуждаемой из почвы органической массы в зернокормовом севообороте в условиях Западного Прикаспия. Рассмотрено два севооборота (с двухлетней и трёхлетней люцерной), по пласту и обороту пласта выращивали озимую пшеницу, после уборки которой в пожнивный период с помощью провокационного полива формировали пожнивный естественней фитоценоз (ПЕФ). Степень насыщения севооборотов люцерной составляла соответственно 50 и 60,0%, озимой пшеницей + ПЕФ — 60,0 и 40%. Установлено, что увеличение срока использования люцерны в зернотравяных севооборотах с 2 до 3 лет и доли её в структуре посевных площадей с 50 до 60% способствовало увеличению сборов сена с 1 га севооборотной площади на 2,57 т/га (на 19,0%), зерна озимой пшеницы по пласту — на 7,9%, по обороту пласта — на 6,5%, надземной массы ПЕФ — на 5,3 и 5,1% соответственно. Одновременно увеличивалось и количество накапливаемой растительной массы с 71,56 до 92,66 т/га севооборотной площади. Но в том случае, когда люцерна в севообороте использовалась 2 года, а доля озимой пшеницы с последующим использованием пожнивного периода под ПЕФ увеличивалась с 40 до 50% севооборотной площади, неотчуждаемой из почвы растительной массы накапливалось больше на 20,2%. Заслуживает уточнения в методическом плане вопрос об отнесении части урожая сена люцерны, произведённого в хозяйстве, к неотчуждаемой из почвы продукции подобно тому, как это делается в отношении соломы, только 60% которой считается экосистемной. The investigation took place at the OOO “Vympel 2002” in the Khasavyurt district of the Republic of Dagestan in 2013–2015. Soil of the trial field contained 2.77% of humus, Р2О5 — 2.21 mg, К2О — 32.8 mg/100 g of soil, layer density — 1.24 g/cm3, the lowest moisture content of the 0–0.6 m layer — 29.2%. The aim was to test the effect of alfalfa age on the accumulation of total and soil organic mass in grain crop rotation in the Western Caspian region. Two crop rotations were studied (two- and three-year old alfalfa). After harvesting winter wheat the plot was irrigated to form post-harvest natural phytocenosis. Alfalfa proportion amounted to 50 and 60%, winter wheat + post-harvest natural phytocenosis — 60 and 40%. Cultivation of alfalfa for 3 years instead of 2 and increase in its proportion from 50 to 60% improved hay yield by 2.57 t ha-1 (19%), wheat grain yield — by 7.9 and 6.5%, top mass of post-harvest natural phytocenosis — by 5.3 and 5.1%, respectively. Plant mass increased from 71.56 to 92.66 t ha-1. When alfalfa was cultivated for 2 years and winter wheat proportion raised from 40 to 50%, accumulation of soil organic matter improved by 20.2%. Attributing part of alfalfa hay to soil organic matter was performed the same way as for straw, only 60% of which belonged to an ecosystem.

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