A numerical microscopically informed upscale approach for analyzing the reliability of testing method for concrete resistance to freeze-thaw

Polyvinyl Alcohol (PVA) fiber reinforced mortars (FRM) have been shown to increase the ductility of unreinforced masonry walls thus improving their out-of-plane flexural capacities. As these mortars become increasingly popular, their durability under freeze-thaw conditions requires further scrutiny. Previously, the durability of PVA FRM has been evaluated as mortar components only and not in combination with masonry units. The freeze-thaw testing of masonry mortars requires a complex analysis to duplicate in-situ conditions. Accelerated testing conditions are desired to represent the weathering that a structure would endure over time. This is done by simulating an aggressive weathering pattern on a test specimen in order for the analysis of the durability of the mortar and brick to be obtained within a timely manner. Currently, the standard freeze-thaw durability testing method for cementitious materials utilized in the United States of America, ASTM C666/C666M-03, is characterized by two methods: rapid freezing in water and thawing in water; and rapid freezing in air and thawing in water. This testing method provides a durability rating for specimens created and contained within a laboratory, but does not accurately represent all of the environmental factors that influence the durability of a mortar/brick structure. In this study, in order to replicate in-situ conditions, PVA FRM test specimens are constructed and subjected to freezing in water on only one side and are enclosed in a plastic bag to remedy the effect of the dry, frozen air reducing the moisture content of the mortar. Furthermore, the test specimens are frozen and thawed in a controlled environmental chamber where the relative humidity is controlled to prevent moisture change within the specimen. This enables rapid thawing of the specimen while controlling the relative humidity to better represent the in situ characteristics of masonry structures. The specimens are then subjected to 300 freeze-thaw cycles and evaluated to determine their degradation over that time. Results of the testing show limited reduction in material volume and weight of the PVA FRM compared to control samples that do not include PVA fibers.

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The present state of aspirin and clopidogrel resistance

Hämostaseologie ◽

10.1055/s-0037-1617036 ◽

2009 ◽

Vol 29 (03) ◽

pp. 285-290 ◽

Cited By ~ 2

Author(s):

K. E. Guyer

Keyword(s):

Diagnostic Tests ◽

Arterial Thrombosis ◽

Cardiovascular Events ◽

Treatment Success ◽

Antiplatelet Agents ◽

Antiplatelet Drug ◽

Coronary Syndrome ◽

Testing Method ◽

Pharmacological Response ◽

Platelet Physiology

SummaryAntiplatelet therapy has demonstrated significant clinical benefit in the treatment of acute coronary syndrome. However, as with any treatment strategy it has been unable to prevent all cardiovascular events. This is far from surprising when considering the complexity of arterial thrombosis and more specifically platelet physiology. This lack of treatment success has provoked the introduction of various diagnostic tests and testing platforms with the intent of guiding and optimizing clinical treatment. Such tests have resulted in the generation of clinical data that suggest suboptimal response to antiplatelet agents such as aspirin and clopidogrel.In the case of both aspirin and clopidogrel, this suboptimal response has been termed resistance. Drug resistance would imply a lack of pharmacological response that has not been specifically investigated in many of the clinical studies performed to date. Rather, the term resistance has been used to describe various facets of platelet activation and aggregation relative to the testing method. Many of these measured parameters are not addressed in the therapeutic intent of the antiplatelet drug in question.

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Soil Response during Globally Drained and Undrained Freeze–Thaw Cycles under Deviatoric Loading

Journal of Geotechnical and Geoenvironmental Engineering ◽

10.1061/(asce)gt.1943-5606.0002464 ◽

2021 ◽

Vol 147 (2) ◽

pp. 06020030

Author(s):

Sang Yeob Kim ◽

Junghee Park ◽

Wonjun Cha ◽

Jong-Sub Lee ◽

J. Carlos Santamarina

Keyword(s):

Soil Response ◽

Freeze Thaw

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Pengujian pada Aplikasi Penggajian Pegawai dengan menggunakan Metode Blackbox

Jurnal Informatika Universitas Pamulang ◽

10.32493/informatika.v5i1.4340 ◽

2020 ◽

Vol 5 (1) ◽

pp. 61

Author(s):

Vadlan Febrian ◽

Muhamad Rizki Ramadhan ◽

Muhammad Faisal ◽

Aries Saifudin

Keyword(s):

Data Entry ◽

Black Box ◽

Application Form ◽

Value Analysis ◽

Test Function ◽

Testing Method ◽

Black Box Testing ◽

Sample Testing ◽

Testing Techniques ◽

Program Error

In this employee payroll application, if there is an error program there will be a loss for employees and the company. Losses for employees, if this application program error occurs then the salary reduction will experience delays due to the difficulty in the process of calculating employee salaries and employees will be late in receiving salaries. Losses for the company, if there is an error program in this application, the company will suffer losses if the employee wants a salary reduction quickly but the company cannot calculate quickly and accurately. In solving this problem, the authors use the black box testing method. Black box testing method is a test that sees the results of execution through test data and ensures the function of the software. Black box testing method has several testing techniques, namely Sample Testing, Boundary Value Analysis, Equivalence Partitions and others. From the testing techniques that have been mentioned, we use the Equivalence Partitions testing technique. Equivalence Partitions are tests that refer to data entry on the employee payroll application form, input will be tested and then put together based on the test function, both valid and invalid values. The expected results of this test are a payroll system for employees who are computerized, have standard rules in the process of developing the program so that it is easy to develop and maintain, and can minimize errors in processing salary calculations for employees.

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Analisis Kesalahan Penggunaan Jinyici dalam Membuat Kalimat Bahasa Mandarin pada Mahasiswa Semester VI Angkatan 2014 Prodi Pendidikan Bahasa Mandarin Universitas Negeri Semarang

Longda Xiaokan: Journal of Mandarin Learning and Teaching ◽

10.15294/longdaxiaokan.v3i1.25899 ◽

2020 ◽

Vol 3 (1) ◽

Author(s):

Siti Soleha ◽

Fansi Onita Santoso ◽

Zaim Elmubarok

Keyword(s):

Language Education ◽

Quantitative Approach ◽

Education Department ◽

Testing Method ◽

Mandarin Language

Penelitian ini bertujuan untuk mengetahui besar persentase kesalahan penggunaan (jìnyìcí), mengetahui kesalahan apa saja yang dilakukan mahasiswa, menentukan cara untuk membedakan penggunaan (jìnyìcí) dan merumuskan solusi yang dapat dilakukan untuk mengurangi kesalahan penggunaan (jìnyìcí) tersebut. Pendekatan penelitian yang dilakukan adalah deskriptif kuantitatif. Populasi dan sampel pada penelitian ini adalah mahasiswa semester VI angkatan 2014 Prodi Pendidikan Bahasa Mandarin Universitas Negeri Semarang sebanyak 25 mahasiswa. Teknik pengumpulan data dilakukan dengan metode dokumentasi dan metode tes. Berdasarkan hasil penelitian diketahui persentase kesalahan penggunaan (jìnyìcí) adalah sebesar 28,4%. Kesalahan tersebut tergolong pada tingkat rendah, namun ada beberapa kesalahan yang perlu lebih diperhatikan yaitu kesalahan dalam penggunaan fungsi tata bahasa dan kesalahan dalam memahami makna. Cara membedakan penggunaan (jìnyìcí) dapat dilakukan mahasiswa dengan mempelajari fungsi tata bahasa kosakata (jìnyìcí) dan memahami makna kosakata (jìnyìcí). Solusi yang dapat dilakukan adalah mempelajari fungsi tata bahasa kosakata (jìnyìcí) secara keseluruhan dengan benar, memahami makna kosakata (jìnyìcí) secara spesifik, dan memperbanyak latihan membuat kalimat menggunakan kosakata (jìnyìcí).This study aims to identify mistake percentage in using (jìnyìcí), identify what mistakes conducted by students, determine how to differentiate the usage of (jìnyìcí), and formulate solution to reduce mistake in using (jìnyìcí). This study uses descriptive-quantitative approach. There are 25 sixth students of Mandarin Language Education Department in Universitas Negeri Semarang as population and sample. In addition, data is collected by documentation and testing method. Based on the analysis, there is 28,4% of mistake in using (jìnyìcí). This finding is categorized as low. However, there are some mistakes that need to be noted. For instance, mistake in using grammar and interpreting meaning. Furthermore, (jìnyìcí) can be differentiate by studying grammar of (jìnyìcí) and understand the meaning of (jìnyìcí). Finally, it is recommended to study the grammar of (jìnyìcí), specifically understand the meaning of (jìnyìcí) and increase the exercise to make sentences using (jìnyìcí).

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