scholarly journals Design and Experimental Study of Potato-Soil SeparationDevice for Sticky Soils Condition

2021 ◽  
Vol 11 (22) ◽  
pp. 10959
Author(s):  
Bei Wu ◽  
Tianci Huang ◽  
Xuanxuan Qiu ◽  
Tianlin Zuo ◽  
Xiushan Wang ◽  
...  
Keyword(s):  
Potato Tuber ◽  
Field Experiments ◽  
Southern China ◽  
Orthogonal Test ◽  
National Standard ◽  
Separation Device ◽  
Second Stage ◽  
Damage Rate ◽  
Harvesting Process ◽  
Test Result

The potato-soil separation device comprising five function areas (i.e., shearing, bending, throwing, cleaning, and conveying) was developed to address the mentioned problems (e.g., soil with high moisture content, large viscosity, and poor separation efficacy) in the harvesting process for winter idle paddy fields of Southern China. Given the kinetic analyses for the potato-soil mixture of five function areas, the crucial factors of the effect of potato-soil separation were determined. Subsequently, the orthogonal test of 4 factors and 3 levels was performed, and the percentage of small soil λ, the percentage of soil adhering to potato tuber γ, and damage rate of potato tuber K were adopted as assessment indexes. Regression analyses and programming for the orthogonal test result were conducted to optimize the device run parameters, and the optimal run parameters included the rotational speed of the soil-crushing mechanism of 84.18 r/min, linear velocity of second-stage lifting chain of 0.75 m/s, and inclination angle of lifting chain of 15.87°. The field experiments were performed with the modified potato harvester. As indicated from the result, the visible potato rate was 94.31% and damage rate of potato was 0.89%, and the requirement of the national standard was satisfied. This study presented technical feasibility data and equipment for potato-soil separation under sticky soils condition.

UPAYA MOTIVASI DAN AKTIVITAS BELAJAR IPA PADA MATERI PENGUKURAN DENGAN MENGGUNAKAN MEDIA ANIMASI FLASH DI SMP NEGERI 3 PERCUT SEI TUAN

2013 ◽  
Vol 2 (2) ◽  
pp. 25
Author(s):  
Untung Narpati
Keyword(s):  
Learning Activity ◽  
Seventh Grade ◽  
Average Percentage ◽  
Second Stage ◽  
Satisfaction Condition ◽  
Motivation And Learning ◽  
Academic Year ◽  
Test Result ◽  
Science Subject

This research is aimed to find out the efforts to raise students’motivation and learning activity by utilizing flash animation media on the Science subject on the topic discussion of “Pengukuran” to the seventh gradestudents of SMP Negeri 3 Percut Sei Tuan. The subjects of the research werethirty students of seventh grade Academic Year 2012/2013 that consist of 15males and 15 females. The object of the research was how to raise thestudents’ motivation and learning activity by utilizing flash animation mediabased on the STAD theory. The result reveals that: (1) there is an averagerise of the students’ learning completeness which is indicated by (a) the test result in the first stage completes 63.33%, (b) the test-result in the secondstage completes 86.70% and the index gain is 0.32% which raises mediumcriteria. (2) Students learning activity is found rose which is indicated by theincreasing average percentage of 72.40 in the first stage becomes 88.48 inthe second stage. (3) There is an increasing number of students learningmotivation which is known that students’ motivation in the attentioncondition rises as much as 28.44% from 52.89% in the first stage becomes81.33% in the second stage, there is an increasing number in the relevancecondition as much as 23.67% from 64.75% in the first stage becomes88.42% in the second stage, there is an increasing number in the confidencecondition as much as 30.86% from 57.71% in the first stage become 88.57%in the second stage, on the satisfaction condition; there is also increasingnumber as much as 23.58% from 65.33% in the first stage becomes 88.92%in the second stage.

Fatigue Damage From High Mode Number Vortex-Induced Vibration

2006 ◽  
Author(s):  
J. Kim Vandiver ◽  
Susan B. Swithenbank ◽  
Vivek Jaiswal ◽  
Vikas Jhingran
Keyword(s):  
Fatigue Damage ◽  
Field Experiments ◽  
Higher Harmonics ◽  
Vortex Induced Vibration ◽  
Third Harmonic ◽  
The Third ◽  
Damage Rate ◽  
Surface Vessels ◽  
Vortex Shedding Frequency ◽  
First Time

This paper presents results from two field experiments using long flexible cylinders, suspended vertically from surface vessels. The experiments were designed to investigate vortex-induced vibration (VIV) at higher than tenth mode in uniform and sheared flows. The results of both experiments revealed significant vibration energy at the expected Strouhal frequency (referred to in this paper as the fundamental frequency) and also at two and three times the Strouhal frequency. Although higher harmonics have been reported before, this was the first time that the contribution to fatigue damage, resulting from the third harmonic, could be estimated with some certainty. This was enabled by the direct measurement of closely spaced strain gauges in one of the experiments. In some circumstances the largest RMS stress and fatigue damage due to VIV are caused by these higher harmonics. The total fatigue damage rate including the third harmonic is shown to be up to forty times greater than the damage rate due to the vibration at the fundamental vortex-shedding frequency alone. This dramatic increase in damage rate due to the third harmonic appears to be associated with a narrow range of reduced velocities in regions of the pipe associated with significant flow-induced excitation.

scholarly journals Soil Suppressiveness Against the Disease Complex of the Soybean Cyst Nematode and Sudden Death Syndrome of Soybean

2011 ◽  
Vol 101 (7) ◽  
pp. 878-886 ◽  
Author(s):  
Andreas Westphal ◽  
Lijuan Xing
Keyword(s):  
Sudden Death ◽  
Soybean Cyst Nematode ◽  
Field Experiments ◽  
Cyst Nematode ◽  
Sudden Death Syndrome ◽  
Fusarium Virguliforme ◽  
Soil Suppressiveness ◽  
Second Stage ◽  
Disturbed Soil ◽  
Field Plots

The ecology of the complex of soybean cyst nematode (SCN) and sudden death syndrome (SDS) of soybean was investigated under soybean monoculture in two field experiments from 2003 to 2007. Initially, susceptible soybean ‘Spencer’ was planted while inoculating Fusarium virguliforme into nonfumigated or preseason-fumigated plots (methyl bromide, MB, at 450 kg/ha), and SCN and SDS were monitored. In one field, SCN population densities declined in nonfumigated but increased in fumigated plots. After years of limited SDS in 2003 and 2004, SDS developed later in nonfumigated than fumigated plots. In 2006 in the greenhouse, nondisturbed or disturbed soil cores (10-cm diameter, 30-cm depth) from field plots received two two-level factors: (i) nonfumigated or fumigated (1,070 kg/ha MB); and (ii) noninoculated or inoculated with 9,000 second-stage juveniles of SCN. At harvest, nonfumigated cores from nonfumigated plots had fewer nematodes and less SDS regardless of disturbance or inoculation than the corresponding fumigated cores and any cores from fumigated plots. In the second field, SCN became detectable after 2003 during the monoculture in nonfumigated plots and lagged in fumigated plots; both treatments had low levels of SDS. Exploiting the suppressiveness of the first field could allow for biological control of SDS and SCN in soybean production.

scholarly journals PENGARUH PEMBERIAN KURMA TERHADAP KEMAJUAN PERSALINAN KALA II IBU BERSALIN DI RUMAH SAKIT AURA SYIFA KABUPATEN KEDIRI

2020 ◽  
Vol 2 (2) ◽  
pp. 126-134
Author(s):  
Lely Ayu Permata Addini ◽  
Ira Titisari ◽  
Ribut Eko Wijanti
Keyword(s):  
Date Palm ◽  
Sampling Technique ◽  
Fisher Exact Probability Test ◽  
Group Approach ◽  
Exact Probability ◽  
Second Stage Of Labor ◽  
Uterine Contractions ◽  
Second Stage ◽  
Static Group ◽  
Test Result

Progress of labor depends on three factors: (power) is the efficiency of uterine contractions, passenger (fetal) and passage (uterus, cervix, pelvis). When there are any abnormalities in one or more of the factors above it can slow the progress of delivery process. Dates rich in carbohydrates as a source of energy, affect the progress of labor, spontaneity in labor and reduce postpartum hemorrhage. Carbohydrates as a booster are sugars that are absorbed and used by body cells not long after consumed. The purpose of this study was to determine the effect of dates on the progress of the second stage of labor in Aura Syifa Hospital Kediri Regency. The research design used was pre-experimental (pre experimental design) with a static group approach (the static group comparison). The samples were 32 respondents who were determined by accidental sampling technique. In this research the data analysis used was Fisher Exact Probability test. Based on the statistic test result that there was no influence of Providing Date Palm to the mother in labor at second progress of labor in Kediri Aura Syifa Hospital.

scholarly journals Karakteristik Terasi Jeroan Ikan Cakalang (Katsuwonus pelamis L) Berdasarkan Hasil Uji Organoleptik

2018 ◽  
Vol 18 (1) ◽  
pp. 25
Author(s):  
Fernando Nenabais ◽  
Feti Fatimah ◽  
Vanda S. Kamu
Keyword(s):  
Salt Concentration ◽  
Fermentation Process ◽  
National Standard ◽  
Skipjack Tuna ◽  
Katsuwonus Pelamis ◽  
Organoleptic Test ◽  
Test Result

KARAKTERISTIK TERASI JEROAN IKAN CAKALANG (Katsuwonus pelamis L) BERDASARKAN HASIL UJI ORGANOLEPTIKABSTRAKTerasi adalah suatu jenis bahan penyedap makanan yang berbentuk padat, berbau  khas, hasil fermentasi udang atau ikan atau campuran keduanya dengan  garam,atau  tanpa bahan tambahan lain yang diizinkan. Tujuan dari penelitian ini Menentukan karakteristik terasi  dari jeroan ikan cakalang berdasarkan Hasil Organoleptik. Metode yang dikembangkan Teknik Kering (TK) dan  Teknik Semi Basah (TSM), dengan proses lama fermentasi (t): (5,10, dan 15 hari ) serta konsentrasi garam (G) : ( 5%, 10% dan 20%).  Pengujian Organoleptik berdasarkan SNI No. 2716:2016. Penelitian ini dilakasanakan Fakultas MIPA dan selama 2-3 bulan. Hasil pengujian mendapatkan terasi terbaik dari Teknik Kering, berdasarkan uji kenampakan, Bau, Rasa dan Tekstur yaitu waktu fermentasi 15 hari (G3) dan konsentrasi garam 20% (G3). Untuk Sampel TTK (G3,t3)  uji kenampakan : 7,227, Bau: 7,345, Rasa : 7,299 dan Tesktur : 7,33, sehingga berdasarkan SNI Terasi Udang No. 2716:2016, minimla uji organoleptik 7, maka pengujian pada sampel TTK (G3,t3) sesuai dengan standar yang ditetapkan  dengan Standar deviasi (1,96) dan P (95%).Kata kunci : Terasi, Organoleptik, Ikan Cakalang, Karakteristik THE OPTIMIZATION AND CHARACTERIZATION OF FISH PASTEINNARDS FROM SKIPJACK,  (Katsuwonus pelamis, L). ABSTRACT Terasi (the Indonesian seafood fermented paste) is a type of solid-shaped flavoring ingredients, with its distinctive odor, is a fermented shrimp or fish or a mixture of both with salt, orno other permitted additives. The aim of this research is to determine the characteristics of Terasi from the offal of skipjack tuna based on the Organoleptic Test Result. The methoddevelopedthrough Dry Technique (TK) and Semi-Wet Technique (TSM), with the fermentation process (t): (5,10 and 15 days) and salt concentration (5%, 10% and 20%). Organoleptic Test is based on the Indonesian National Standard (SNI) No. 2716: 2016. The test result obtained the best Terasithrough Dry Technique, based on the appearance, odor, taste and texture test that were 15 days of fermentation process (G3) and 20% of salt concentration (G3). For the sample of TTK (G3, t3) the appearance test : 7.227, Odor: 7,345, Taste: 7,299 and Texture: 7,3302. So that based on the SNI, Terasi UdangNo. 2716: 2016, with the minimun organoleptic test of 7, has determined that the testing on TTK samples (G3, t3) is in accordance with the Deviation Standard (1.96) and P (95%).Keyword: Terasi, Organoleptic, Skipjack tuna, Characteristic

scholarly journals DEVELOPMENT AND TESTING OF SOIL IMPURITIES REMOVING APPARATUS FOR POTATO

2021 ◽  
pp. 485-494
Author(s):  
Hongguang Yang ◽  
Huanxiong Xie ◽  
Hai Wei ◽  
Jianchun Yan ◽  
Huichang Wu ◽  
...  
Keyword(s):  
Optimal Parameter ◽  
Removal Rate ◽  
Orthogonal Test ◽  
Movement Speed ◽  
Deep Processing ◽  
Cleaning Operation ◽  
Damage Rate ◽  
Influencing Parameters ◽  
Impurities Removal ◽  
Average Damage

Aiming at the problem that contain more soil impurities of potato post-harvest, which affects subsequent deep processing, an apparatus for removing soil impurities from potato was developed. The whole structure is mainly composed of frame, feeding port, flexible rubber finger conveying mechanism, slender filament rotary brushing mechanism, discharging port and the like. The research and analysis determined that the main parameters influencing the soil impurities removal performance were the movement speed of conveying mechanism, the movement speed of brushing mechanism and the clearance between conveying mechanism and brushing mechanism (hereinafter referred to as the mechanism clearance). Taking the main influencing parameters as test factors, and the soil impurities removal rate and potato damage rate as indexes, the orthogonal test with three factors and three levels was carried out. The optimal parameter combination was obtained as follows: the movement speed of conveying mechanism was 0.35m/s, the movement speed of brushing mechanism was 0.40m/s, and the mechanism clearance was 55mm. At this time, the average soil impurities removal rate was 87.18%, and the potato average damage rate was 1.95%, which met the requirements of potato cleaning operation.

Novel Wall Paint for Decorative Style of Retro Rammed-Earth Wall Based on Dry Hanging

2019 ◽  
Vol 13 (4) ◽  
pp. 537-543
Author(s):  
Ke He ◽  
Yong Liu ◽  
Yanting He
Keyword(s):  
Southern China ◽  
Sun Exposure ◽  
Embodied Energy ◽  
National Standard ◽  
Alkali Resistance ◽  
Wall Structure ◽  
Rammed Earth ◽  
High Concentration ◽  
Excellent Performance ◽  
Rammed Earth Wall

Owing to its unique ornamental style, the decorative retro rammed-earth wall style has attracted widespread interest in recent years. With this motivation, a novel multi-coated rammed-earth paint using dry hanging has been studied. This paint could overcome the limitations of surface material shedding and low strength in an extreme external environment. It has the advantages of low construction cost, simple production, low embodied energy, recyclability, and excellent performance. The alkali-resistance test of the paint was carried out in a high-concentration alkaline solution. The paint demonstrated insignificant performance change after 96 h. It has also been determined that the weather resistance of the sample does not display any evidence of chalking after 10 cycles of freezing and heating experiments. Rain and sun exposure are considered extremely important factors in durability of paint and were also tested for in the climatic chamber. The environmental parameters in the chamber were modeled based on the environment of southern China. Later, the coating product was tested according to the Chinese national standard of JG-T24-2000 (synthetic resin emulsion sand wall structure), demonstrating excellent performance. Thus, the innovative products of earth wall paint discussed in this study have the potential to meet the needs of the market.

Research on Road Test Technology of Automobile Braking Ability Based on MEMS

2013 ◽  
Vol 718-720 ◽  
pp. 830-836
Author(s):  
Jun Liu ◽  
Jun Yu Cai ◽  
Xiao Peng Shi
Keyword(s):  
Low Cost ◽  
Test System ◽  
National Standard ◽  
Road Test ◽  
Widespread Application ◽  
The Real ◽  
System Building ◽  
Test Technology ◽  
Test Result

To test and rate automobile braking ability rapidly, correctly with low cost, a road test system of automobile braking ability is constituted in LabVIEW based on MEMS after the deeply analysis of rating principle and national standard of it. Then the real car test is accomplished using this test system and the test result has been analyzed which prove the strategy of system building is feasible and has widespread application value and prospect in engineering.

Transverse Vibration Testing Research for 6.8 Grades Bolted Joint Used on Transmission Tower

2013 ◽  
Vol 470 ◽  
pp. 567-571
Author(s):  
Xiao Hao Dai ◽  
Yan Ting Feng ◽  
Xiao Guang Niu ◽  
Hui Fan ◽  
Qiang Wang ◽  
...  
Keyword(s):  
Transverse Vibration ◽  
Decisive Role ◽  
Bolted Joint ◽  
Transmission Tower ◽  
Vibration Testing ◽  
Second Stage ◽  
Reduced Rate ◽  
Test Result

Five groups of vibration experiments were carried out on the 6.8 grades and M20 bolts and nuts that used on transmission tower. The test result shows that the basic way to improve the anti-loosening property was increasing the initial preload. Both increasing initial torque and appending lubrication can obviously increase the initial preload, however appending lubrication may reduce it's anti-loosening property under the situation of same preload. In the vibrating process the second stage plays a decisive role for anti-loosening property, it can be expressed as reduced rate “K” of the preload.

Climatic factors affecting the catches of potato tuber moth Phthorimaea operculella (Zell.) (Lepidoptera, Gelechiidae) at a pheromone trap

1976 ◽  
Vol 66 (1) ◽  
pp. 81-85 ◽  
Author(s):  
A. Krambias
Keyword(s):  
Wind Speed ◽  
Potato Tuber ◽  
Field Experiments ◽  
Climatic Factors ◽  
Pheromone Trap ◽  
Automatic Recording ◽  
Phthorimaea Operculella ◽  
Potato Tuber Moth ◽  
Recording Device ◽  
Factors Affecting

AbstractA pheromone trap fitted with an automatic recording device to separate hourly catches of males of Phthorimaea operculella (Zell.) is described. Field experiments in Cyprus showed that when the trap was baited with virgin females peak catches occurred shortly before or 1–2 h after sunset; catches increased with wind speed in the range 0·1—4·7 ms-1, decreased with higher relative humidities in the range 62–92%, and were not affected by temperature.

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