scholarly journals Experimental Study on Planting Soil Preparation by Improving River & Lake Silt with Plant Wastes

2021 ◽  
Author(s):  
Haibo Chen ◽  
Zhiqiang Wu ◽  
Kai Xu ◽  
Jie Ren ◽  
Zhong Wang ◽  
...  
Keyword(s):  
Experimental Study ◽  
Plant Growth ◽  
Organic Matrix ◽  
Loess Soil ◽  
Wood Chips ◽  
Experiment Study ◽  
Fertility Index ◽  
High Nutrient ◽  
Soil Preparation ◽  
The Difference

The physicochemical properties of river & lake silt are complex, and whether it can be directly used as planting soil is worth studying. The calliopsis pot experiment is carried out with planting soil prepared by amendment material, i.e. the organic matrix which is made by fermentation of high-nutrient sludge of a river in Nanjing, the dry excavating sludge in a lake and its flocculated and dewatered sludge together with plant wastes such as wood chips, to study the effects of different types of amendment materials and compounding ratio on plant growth. The results showed that the basic properties and fertility index of the planting soil could be adjusted directionally by adding wood chips or matrix. The overall growth of calliopsis in the planting soil formed by the high-nutrient silt in a river and its compound is the best, but some of the fertility indexes of the planting soil are too high and need to be further adjusted before use; the growth of calliopsis in the improved soil made of dry-excavation silt in a lake is better than that in the original silt, such situation is positively correlated with the amount of improved materials mixed; the difference between the growth of calliopsis in the flocculated silt in a lake and that in its improved planting soil is not significant, but some of the fertility indexes are higher than the standard indexes, and such silt can be slightly adjusted and improved into the planting soil. The field cultivation experiment study of calliopsis is carried out with the dry-excavation silt in a lake mixed with 4% wood chips and the original loess soil in the experimental field, and the growth of calliopsis planted in the dry-excavation silt in a lake is better compared with that of calliopsis planted in original loess soil. The research results can provide ideas and basis for the study on improving river & lake silt into planting soil with plant wastes.

Experimental Study of Upward Flame Spread over Discrete Weathered Wood Chips

2021 ◽  
pp. 1-12
Author(s):  
Biao Zhou ◽  
Kai Wang ◽  
Yanyi Liuchen ◽  
Yuhang Li ◽  
Xukun Sun ◽  
...  
Keyword(s):  
Experimental Study ◽  
Flame Spread ◽  
Wood Chips ◽  
Upward Flame Spread

Experimental Study on the Failure Criterion for Brittle Materials in Compression

2011 ◽  
Vol 320 ◽  
pp. 259-262
Author(s):  
Xu Ran ◽  
Zhe Ming Zhu ◽  
Hao Tang
Keyword(s):  
Thin Film ◽  
Experimental Study ◽  
Compressive Strength ◽  
Fracture Mechanics ◽  
Failure Criterion ◽  
Brittle Materials ◽  
Experimental Results ◽  
Experiment Study ◽  
Confining Stress ◽  
Theoretical Results

The mechanical behavior of multi-cracks under compression has become a very important project in the field of fracture mechanics and rock mechanics. In this paper, based on the previous theoretical results of the failure criterion for brittle materials under compression, experiment study is implemented. The specimens are square plates and are made of cement, sand and water, and the cracks are made by using a very thin film (0.1 mm). The relations of material compressive strength versus crack spacing and the lateral confining stress are obtained from experimental results. The experimental results agree well with the failure criterion for brittle materials under compression, which indicates that the criterion is effective and applicable.

Experiment Study on Mechanics and Pore Structure of Steel Fibre Reinforced Concrete

2010 ◽  
Vol 150-151 ◽  
pp. 825-828
Author(s):  
Yan Wang ◽  
Di Tao Niu ◽  
Yuan Yao Miao ◽  
Nai Qi Jiao
Keyword(s):  
Mechanical Properties ◽  
Experimental Study ◽  
Reinforced Concrete ◽  
Pore Structure ◽  
Steel Fibre ◽  
Fibre Reinforced Concrete ◽  
Experiment Study ◽  
Steel Fibre Reinforced Concrete ◽  
Mercury Intrusion ◽  
Strength And Durability

The concrete microstructure can affect its macroscopic properties, such as the strength and durability, etc. Based on the experimental study of cube compressive strength of steel fibre reinforced concrete, splitting tensile strength, flexural strength, and using by mercury intrusion method to test the pore structure of steel fibrous, this paper analyzes the influence of fibre on concrete pore structure. And then on mechanical properties of concrete from microcosmic perspective.

Experimental Study of Bending Toughness on Hybrid Fiber Reinforced Concrete

2013 ◽  
Vol 327 ◽  
pp. 201-204
Author(s):  
Jin Song Shi ◽  
Bo Yuan ◽  
Da Zhang Wang ◽  
Zhe An Lu
Keyword(s):  
Experimental Study ◽  
Reinforced Concrete ◽  
Fiber Reinforced Concrete ◽  
Bending Test ◽  
Fiber Reinforced ◽  
Hybrid Fiber ◽  
Toughness Index ◽  
The Difference ◽  
Loading Methods ◽  
Index Value

In order to investigate the difference of current toughness index standards for fiber reinforced concrete, two main groups of specimens were made to take bending toughness test with the requirements of corresponded standards, loading methods and loading speeds, which are ASTM C1018 in America, ACI 544 and JSCE G552 in Japan. United with software Origin, the load-deflection curves gathered from bending test was calculated with relative standards. The results show that the calculated toughness index value with ASTM C1018-98 in America is more accurate with three grades but the requested deflection of testing is much longer than others while ACI 544 and JSCE G552 in Japan are quite the contrary.

scholarly journals Strength Comparison of FDM 3D Printed PLA Made by Different Manufacturers

TEM Journal ◽  
2020 ◽  
pp. 966-970
Author(s):  
Damir Hodžić ◽  
Adi Pandžić ◽  
Ismar Hajro ◽  
Petar Tasić
Keyword(s):  
Experimental Study ◽  
Additive Manufacturing ◽  
Fused Deposition Modelling ◽  
Fused Deposition ◽  
Manufacturing Technique ◽  
Plastic Materials ◽  
Wide Range ◽  
3D Printed ◽  
The Difference ◽  
Printing Parameters

Widely used additive manufacturing technique for plastic materials is Fused Deposition Modelling (FDM). The FDM technology has gained interest in industry for a wide range of applications, especially today when large number of different materials on the market are available. There are many different manufacturers for the same FDM material where the difference in price goes up to 50%. This experimental study investigates possible difference in strength of the 3D printed PLA material of five different manufacturers. All specimens are 3D printed on Ultimaker S5 printer with the same printing parameters, and they are all the same colour.

scholarly journals Perbedaan Indeks Plak setelah Pengolesan Ekstrak Daging Buah Naga Merah (Hylocereus costaricensis) dan Larutan Pengungkap

2019 ◽  
Vol 16 (1) ◽  
pp. 21
Author(s):  
Hillary Inggrid Prananta ◽  
Purwanto Purwanto ◽  
Elyda Akhya Afida Misrohmasari ◽  
Niken Probosari ◽  
Surartono Dwiatmoko
Keyword(s):  
Experimental Study ◽  
Hydrogen Bonds ◽  
Dental Plaque ◽  
Plaque Index ◽  
Group Comparison ◽  
Fruit Flesh ◽  
Dragon Fruit ◽  
Significant Difference ◽  
The Difference ◽  
Static Group

Red dragon fruit flesh extract contains of anthocyanin as red pigmen that potentially to be a natural dye. Athocyanin contains of polysaccharide that can binding with polysaccharide of dental plaque called hydrogen bonds, so dental plaque has been colored and potentially as alternative of disclosing solution. The purpose of this study was to find out the difference of plaque index after smeared by red dragon fruit flesh extract 75% and disclosing solution. The method of this study is a clinical experimental study with a static-group comparison design. 20 subjects were examined the plaque index after smeared with red dragon fruit flesh extract 75%) and disclosing solution). There was no significant difference between groups. Conclusions: Red dragon fruit flesh extract 75% had similar capability with disclosing solution to examine dental plaque.

scholarly journals استراتيجية تعليم المفردات بالغناء في البرنامج المكشف لتعليم اللغة العربية بجامعة مولانا مالك إبراهيم الإسلامية الحكومية مالانج

2018 ◽  
Vol 1 (1) ◽  
pp. 1-24
Author(s):  
ABDUL BASID
Keyword(s):  
Experimental Study ◽  
Confidence Interval ◽  
Teaching Strategy ◽  
T Test ◽  
Learner Participation ◽  
Instructional Activities ◽  
Class B ◽  
Research Problems ◽  
The Difference

Abstrak Penelitian ini dilakukan untuk mengetahui strategi pengajaran kosakata dengan menggunakan (strategi bernyanyi). Rumusan masalah penelitian ini adalah (1) bagaimana proses strategi pengajaran kosakata bahasa Arab dengan menggunakan strategi bernyanyi, (2) bagaimana efektivitas penggunanan strategi pengajaran kosakata bahasa Arab dengan menggunakan strategi bernyanyi. Desain Penelitian yang digunakan adalah studi eksperimental.  Populasi dalam peneltian ini adalah seluruh mahasiswa progam Studi PBA di UIN Maulana Malik Ibrahim, adapun sampel yang diambil dari populasi tersebut adalah mahasiswa Program Studi PBA kelas B-4 UIN Maulana Malik Ibrahim Malang. Hasil dari penelitian ini menunjukkan bahwa (1) proses strategi pengajaran kosakata bahasa Arab dengan strategi bernyanyi yaitu aktivitas pra instruksional, petunjuk isi dan pembelajaran. Partisipasi peserta didik, penilaian, aktifitas timbal balik (2) efektifitas strategi pengajaran bahasa Arab dengan menggunakan strtegi bernyanyi menunjukkan nilai t-test lebih kecil daripadda t-tabel 0,243< 2, 0639, nilai t-test 0,243 itu berada diantara nilai interval konfidensi perbedaan, yaitu nilai tertinggi 1,901 dan nilai terendah 1,501 serta nilai signifikansi 0,810 yang mania lebih kecil dari t-table yaitu 2,0639     Abstract             This reserach elaborates on the teaching strategy of Arabic vocabulary by using the song. The research problems are: (1) what is the process of the teaching strategy of Arabic vocabulary by using the song; and (2) what is the effectiveness of the teaching strategy of Arabic vocabulary by using the song. The design of this study is experimental study. The population of this research is all students in PPBA UIN Maulana Malik Ibrahim Malang and the sample of this research is all students in class B-4 PPBA UIN Maulana Malik Ibrahim Malang. The result of this study is: (1) the process of the teaching strategy of Arabic vocabulary by using the song consist of several stages. They are pre instructional activities, content and learning guidance, learner participation, assessment, and follow-through activities; (2) the effectiveness of the teaching strategy of Arabic vocabulary by using the song is the value of t-test is smaller than t-table 0,243 < 2,0639, the value t-test 0,243 is between the value of confidence interval of the difference, upper 1,901 and lower -1,501, and signified value is 0,810 < t-table is 2,0639.     ملخص ويوضح هذا البحث التركيز في استراتيجية التدريس للمفردات العربية باستخدام الأغنية. وأما مشكلة البحث فهي: أولا، ما هي عملية إستراتيجية التدريس للمفردات العربية باستخدام الأغنية؛ وثانيا؛ ما هي فعالية استراتيجية التدريس للمفردات العربية باستخدام الأغنية. ويكون تصميم هذه الدراسة من نوع الدراسة التجريبية. أما مجتمع البحث لهذا البحث هو جميع الطلاب في قسم تعليم اللغة العربية بجامعة مولانا مالك إبراهيم الإسامية الحكمومية مالانج، والعينة من هذا البحث هو جميع الطلاب في الصف B-4 قسم تعليم اللغة العربية بجامعة مولانا مالك إبراهيم مالانج. والنتائج من هذه الدراسة هي: (1) عملية إستراتيجية التدريس للمفردات العربية باستخدام الأغنية تتكون من عدة مراحل. وهي أنشطة تعليمية سابقة، ومحتوى وإرشادات تعليمية، ومشاركة للمتعلم، وتقييم، وأنشطة متابعة. (2) أما فاعلية إستراتيجية التدريس للمفردات العربية باستخدام الأغنية هي قيمة اختبار t أصغر من t-تابل 0،243 <2،0639، قيمة t-تيست 0،243 بين قيمة فاصل الثقة في الفرق، العلوي 1،901 وأقل -1،501، وقيمة معترف بها هو 0،810 <t- الجدول هو 2،0639.  

scholarly journals PENGARUH LATIHAN SMASH TANPA BOLA DAN LATIHAN SMASH BOLA DIAM TERHADAP KEMAMPUAN SMASH BOLAVOLI

2020 ◽  
Vol 11 (2) ◽  
pp. 72
Author(s):  
Resa Sukardi Massa ◽  
Suprianto Kadir
Keyword(s):  
Experimental Study ◽  
Data Analysis ◽  
Research Groups ◽  
Study Program ◽  
Coaching Education ◽  
Significant Difference ◽  
Education Study ◽  
The Difference ◽  
Sports Coaching ◽  
Paired T Test

This research is a field experimental study that aims to find out the difference between the effects of non-ball smash exercises and silent ball smash exercises on the ability of volleyball smash on students of the FOK UNG Sports Coaching Education Study Program. The population and sample involved in this study were 60 students of the FOK UNG Sports Coaching Education Study Program. However, in accordance with the research design, two research groups were formed which consisted of ball-free smash exercises and silent ball smash exercises. The research was carried out for six weeks with frequency of exercise 3 times a week. Based on the results of data analysis using the paired t-test formula and the unpaired ttest at a significant level of 95%, it can be concluded as follows: There is a significant effect of smash training without the ball on the ability to do volleyball smash (to = 8,869> tt = 2,045 ). There is a significant effect of the silent ball smash exercise on the ability to do volleyball smash (to = 13,535> tt = 2,045). There is a significant difference in the effect between the smash ball practice without the ball and the silent ball smash exercise on the ability to do volleyball smash (to = 8,259> tt = 2,000)

scholarly journals Experimental Study of Vibrational Acceleration Spread and Comparison Using Three Citrus Canopy Shaker Shaking Tines

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Tian-Hu Liu ◽  
Reza Ehsani ◽  
Arash Toudeshki ◽  
Xiang-Jun Zou ◽  
Hong-Jun Wang
Keyword(s):  
Experimental Study ◽  
Experimental Results ◽  
Average Decrease ◽  
Vibrational Acceleration ◽  
The Difference ◽  
Canopy Shaker

The goal of this article is to experimentally study how the vibrational acceleration spreads along the branch shaken by PVC tine, steel tine, and nylon tine for citrus canopy shaking harvesting and to compare the difference. PVC tine and steel tine have potential to be used as shaking rod for citrus canopy shaking harvesting. Nylon tine is a commonly used shaking rod. A tractor-mounted canopy shaker was developed to do the trial. The shaking frequency was set at 2.5 and 5 Hz. Experimental results showed that the vibrational acceleration at the shaking spot is not the highest. Spreading from shaking spot to the stem, it increases evidently. When spreading from stems of the outside subbranch to stems of the nearest inside subbranch, its average decrease percentage is 42%. The overall vibrational acceleration of shaking at 5 Hz is 1.85 times as high as shaking at 2.5 Hz. The overall vibrational acceleration exerted by straight PVC tine and steel tine is 1.77 and 1.97 times as high as that exerted by straight nylon tine, respectively. It is indicated that replacing nylon tine with steel tine or PVC tine helps remove the fruits inside the canopy. Replacing with steel tine is more effective than with PVC tine.

Correlation of SaO2 in patients of COVID-19 with and without COPD

2021 ◽  
Vol 15 (11) ◽  
pp. 2945-2947
Author(s):  
Ali Faheem ◽  
Misbah-ul- Qamar ◽  
Saveela Sadaqat ◽  
Muhammad Akram ◽  
Rizwan Masud ◽  
...  
Keyword(s):  
Experimental Study ◽  
Statistical Analysis ◽  
Gold Standard ◽  
Time Distribution ◽  
Blood Samples ◽  
Paired Sample ◽  
The World ◽  
Pulmonary Cells ◽  
Study Methodology ◽  
The Difference

Background: The Covid-19 pandemic has wreaked havoc throughout the world, with 150 million cases to date and over 3 million lives claimed worldwide. Aim: To explored the difference in levels of SaO2 of COVID-19 positive patients with and without COPD. Study design: Experimental Study. Methodology: From May2020 to 2021 patients admitted at Aziz Bhatti Shaheed hospital were included in this studies. COVID-19 was confirmed by RT-PCR.COPD was confirmed by using GOLD standard of diagnostic criteria. SaO2 was measured by using pulse oximeter and confirmed by blood samples measurement of SaO2. Statistical analysis: SPSS version 22 was used for data analysis. Paired sample t test was performed to evaluate the hypoxia levels between three pairs among the time distribution of 1st, 3rd, and 6th, day. Results: Levels of SaO2 were statistically significant between COVID-19 positive patients and COVID-19 positive patients with COPD. We calculated the levels of SaO2 at day1, 3rd, and 6th day and results were significant to show that COPD might be having some protective effect against hypoxia and that might be due to use of medications or adaptation of pulmonary cells. Conclusion: It was concluded that levels of SaO2 was significantly reduced in COVID-19 patients without COPD in comparison to patients without COPD. Keywords: COVID-19, COPD and SaO2.

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