scholarly journals Prediction of Pre-Compression Stress of Soil with Uniaxial Test

2019 ◽  
Vol 23 (1) ◽  
pp. 95-103
Author(s):  
Kinga Śnieg ◽  
Dariusz Błażejczak
Keyword(s):  
Soil Compaction ◽  
Study Data ◽  
Compression Stress ◽  
Soil Material ◽  
Uniaxial Test ◽  
Model Sample ◽  
Form Model ◽  
Unit Pressure ◽  
Initial Compaction

AbstractThe paper presents a concept of determination of pre-compression stress. It assumes that the stress value is close to the unit pressure value which is indispensable to increase the initial degree of soil compaction. Thus, an attempt was made to develop an empirical model for predicting the value of stress at which the initial compaction of a soil sample increases by a determined value. Samples with the so-called intact structure (NS) and soil material in the form of loose mass were collected from subsoil, and they were used to form model samples. Both types of samples were uniaxially compressed. For the study, data on moisture and dry bulk density of model samples were used, as well as determined ratios (conversion factors) that present relations between the results of compaction of model samples and samples with the intact structure. It was reported that the pressure necessary for the increase of the initial compaction of the model samples with the value of +0.05 or +0.10 g∙cm−3 were higher than the formation pressure respectively by 1.03-1.11 and 1.42-1.93 times. It was proved that for determination of the pre-compression stress of the NS samples models of linear regression for prediction the pressure needed to increase the initial compaction of the model sample by the value of +0.05 g∙cm−3, combined with a coefficient calculated for the present state of the soil properties, can be applied.

scholarly journals STAKEHOLDER INVOLVEMENT AND NATURE OF PROCUREMENT PROCESS IN THE UNITED NATIONS ORGANIZATION STABILIZATION MISSION IN THE DEMOCRATIC REPUBLIC OF CONGO (MONUSCO) ENTEBBE SUPPORT BASE

2017 ◽  
Vol 1 (2) ◽  
pp. 55-81
Author(s):  
Gatta Ouyabaka Marius
Keyword(s):  
United Nations ◽  
Democratic Republic Of Congo ◽  
Stakeholder Involvement ◽  
Target Population ◽  
Study Data ◽  
Descriptive Case Study ◽  
Procurement Process ◽  
The Right ◽  
Procurement Planning

Purpose: The purpose of this study was to examine the nature of procurement process followed by MONUSCO and the involvement of stakeholders in this process.Methodology: The study employed a descriptive case study design. The target population comprised of 261 employees of MONUSCO Entebbe Support Base holding international, United Nations Volunteers (UNV) and National contracts. Random and purposive sampling techniques were specifically used to select samples for this study. Data was collected using questionnaires and interview guides. The quantitative data collected was further analysed using SPSS for descriptive and inferential statistics while the qualitative data was analysed using content analysis.Findings: The study findings showed that there is procurement planning in most MONUSCO sections; that funds are available before planning; that staff are involved in procurement planning in their respective sections; and that procurement planning contributes to achieve the maximum value for expenditures on goods/services and works to be delivered at MONUSCO sections. The study found that procurement planning had led to improved levels of MONUSCO operations in the areas of humanitarian relief, peacekeeping, development assistance to affected communities. The study further found that staff are involved in the identification and definition of the needs of user sections and that the Statement of Requirements (SOR)/or Scope of Work (SOW) was important in their respective sections. These had aided in full scale involvement of relevant stakeholders in the procurement planning activities of MONUSCO ESB.Unique contribution to theory, practice and policy: The study recommends a clear determination of specifications in terms of required quality and quantities by the end-user departments in MONUSCO ESB. Planning and determination of needs should be done early to allow enough time to initiate the procurement process. The study further recommends that the procurement department should always engage all concerned stakeholders in determining the materials and service specification for quality assurance during service delivery. This will enable the sections to always get the quantity of items as requested by end-users, in their right quantity, right quality and at the right time.

scholarly journals Gender differences related to parental role of the youths’ moral and emotional intelligence developmentGençlerin ahlak ve duygusal zekâ gelişiminde ebeveyn rolüne yönelik toplumsal cinsiyet farklılıkları

2016 ◽  
Vol 13 (2) ◽  
pp. 2598 ◽  
Author(s):  
Nilüfer Özabacı ◽  
Tansu Mutlu ◽  
Duygu Çavdar ◽  
Eren Can Aybek
Keyword(s):  
Emotional Intelligence ◽  
Undergraduate Students ◽  
Descriptive Analysis ◽  
Structured Interview ◽  
Study Data ◽  
Faculty Of Education ◽  
Intelligence Development ◽  
And Control ◽  
Academic Year

Morality is related to differentiation between ‘good (may be right)’ or ‘bad (may be wrong)’. It usually includes a range of rules that individuals what they should do or should not do in their society. Morality is a kind of specific cognitive concept that involves conscious judgment and making decision on issues related to rightfulness, injustice, right-wrong, good-bad and behave in parallel with these decisions and judgments. Emotional intelligence has a moral dimension as well. Goleman clarifies concept of emotional intelligence, and he underlines emotions’ role on human behaviour and their close relationships. According to Goleman, the emotional intelligence is the ability to identify, assess, and control the emotions of one self, others, and groups. The study group consists of eight undergraduate students were studying at Eskisehir Osmangazi University Faculty of Education in the academic year 2013-2014. Students were selected from 183 university students among their results from Emotional Intelligence Scale (Ergin, Ismen and Ozabacı, 1999) and Determination of Value Test (Rest, 1979) was applied with 183 undergraduate students with the method of standards sampling with the help of the minimum and maximum scores was selected from individuals (Yildirim and Simsek, 2008). The data were collected by a semi-structured interview form that was prepared by the researchers. The development of form was created for the purpose of considering the questions of the study. Data were collected by interview and qualitative data collection techniques. During the interviews, audio recording was used with the data were analysed the collected recordings with the descriptive analysis. After the categorization of data, the Cappa coefficient was calculated for the consistency between categories. The majority of the participants explained themselves as fair, honest, and emotional. ÖzetAhlak, bireyin doğru ile yanlışı ayırt edebilmesini sağlayan ilkeler ve değerler bütünüdür. Ahlak gelişimi toplumun tüm değerlerine kayıtsız şartsız edilgin bir uyma değil, topluma etkin bir uyum sağlamak için değerler sistemi oluşturma süreci olarak tanımlanmaktadır. Duygusal zekâ, kişinin kendisinin ve başkalarının hislerini tanıma, kendisini motive etme, içindeki ve ilişkilerindeki duyguları yönetme yetisidir. Ona göre duygusal zekâ ahlaki boyutun bir parçasıdır. Araştırma, probleme uygun olarak algıların gerçekçi ve bütüncül bir biçimde, derinlemesine ortaya konmasını hedefleyen nitel araştırma modeli ve olgu bilim deseni ile desenlenmiştir. Araştırmaya Eskişehir Osmangazi Üniversitesi Eğitim Fakültesi’nde 2013-2014 öğretim yılında öğrenim gören 8 lisans öğrencisi katılmıştır. Araştırmaya katılan öğrenciler, daha önceden kendilerine Duygusal Zekâ Ölçeği (Ergin, İşmen ve Özabacı, 1999) ve Değerlerin Belirlenmesi Testi (Rest, 1979) uygulanmış olan 183 lisans öğrencisi arasından aykırı durum örneklemesi (Yıldırım ve Şimşek, 2008) yardımıyla en az ve en çok puan alan bireyler arasından seçilmiştir. Veriler nitel veri toplama tekniklerinden görüşme tekniği ile araştırmacılar tarafından hazırlanan yarı yapılandırılmış görüşme formu kullanılarak toplanmıştır. Verilerin toplanması aşamasında elde edilen ses kayıtlarının dökümü yapılmış ve dökümler üzerinden betimsel analiz yapılmıştır. Kodlamaların ardından, kodlayıcılar arası tutarlılığın belirlenebilmesi için Kappa katsayısı hesaplanmıştır. Çalışma grubundaki bireylerle yapılan görüşmeler sonucunda bireylerin çoğu kendisini adaletli, dürüst, duygusal olarak tanımladığı bulunmuştur. 

scholarly journals Efektifitas Teh Buah Mengkudu Dalam Menurunkan Tekanan Darah Lansia Dengan Hipertensi (Studi di UPTD. Griya Werdha Kota Surabaya Tahun 2018)

2018 ◽  
Vol 2 (2) ◽  
pp. 163
Author(s):  
Arum Reyan Safitri ◽  
Rita Ismawati
Keyword(s):  
Blood Pressure ◽  
Treatment Group ◽  
Nutrition Education ◽  
The Elderly ◽  
Study Data ◽  
Wilcoxon Test ◽  
Control Group ◽  
Control Group Design ◽  
Group Design

Background: Hypertension is the silent disease which a person will not know if he has increased blood pressure. The incidence rate of hypertension is very high especially in the elderly population over 60 years. Hypertension management can be done in pharmacological ways such as medicines and can use natural ingredients in lowering blood pressure that is by utilizing the noni fruit.Objectives: This study aimed to analyze the effectiveness of Noni fruit tea in lowering elderly blood pressure with hypertensionMethod: This research was quasy experimental throug with Pretest-Postest Control Group Design design. Determination of research sample by using inclusion and exclusion criteria. The sample of the study was 34 respondents divided into two groups. Intervention of Noni fruit tea given as much as 5 gram for 30 days with frequency of giving 2 times a day in the morning and afternoon. Blood pressuremeasurement was performed at the beginning of the study and at the end of the study. Data were analysed using wilcoxon test and Mann Whitney test.Result: Mann Whitney test results showed that there was significant effect after the intervention of noni fruit tea in treatment group compared with control group with systolic blood pressure value (p =0.000171) and diastolic blood pressure (p = 0.000480) with α = 0.05Conclusions: Blood pressure in the treatment group after the intervention of noni fruit tea decreased blood pressure compared with the control group. It is Suggested of research, need to do periodic nutrition education and giving noni fruit tea as alternative medicine that effectively decrease hypertension, scheduled.ABSTRAKLatar Belakang : Hipertensi merupakan the silent disease dimana seseorang tidak akan mengetahui jika dirinya mengalami peningkatan tekanan darah. Angka insiden hipertensi sangat tinggi terutama pada populasi lanjut usia diatas 60 tahun. Penatalaksaan hipertensi dapat dilakukan dengan cara farmakologis seperti obat-obatan serta dapat menggunakan bahan alami dalam menurunkan tekanan darah yaitu dengan memanfaatkan buah mengkudu.Tujuan : Penelitian ini bertujuan menganalisis efektifitas teh buah mengkudu dalam menurunkan tekanan darah lansia dengan hipertensiMetode : Penelitian ini bersifat quasy eksperimental dengan desain Pretest-Postest Control Group Design. Penentuan sampel penelitian dengan menggunakan kriteria inklusi dan eksklusi. Sampel penelitian sebanyak 34 responden yang dibagi menjadi dua kelompok. Intervensi teh buah mengkudu diberikan sebanyak 5 gram selama 30 hari dengan frekuensi pemberian 2 kali sehari pada pagi dan sore hari. Pengukuran tekanan darah darah dilakukan pada awal penelitian dan di akhir penelitian. Analisis data penelitian menggunakan uji wilcoxon dan uji Mann Whitney.Hasil : Hasil uji Mann Whitney menunjukkan bahwa terdapat pengaruh yang signifikan sesudah intervensi teh buah mengkudu pada kelompok perlakuan dibandingkan kelompok kontrol dengan nilai tekanan darah sistolik (p=0.000171) dan tekanan darah diastolik (p=0,000480) dengan α=0.05Kesimpulan : Tekanan darah pada kelompok perlakuan susudah intervensi teh buah mengkudu mengalami penurunan tekanan darah dibandingkan dengan kelompok kontrol. Saran penelitian, perlu dilakukan pendidikan gizi secara berkala dan pemberian teh buah mengkudu sebagai obat alternatif yang efektif menurunkan hipertensi, secara terjadwal.

Liquid Chromatographic Method for Determination of Dithianon in Technical Products and Formulations: Collaborative Study

1995 ◽  
Vol 78 (5) ◽  
pp. 1131-1133
Author(s):  
Alan R Hanks
Keyword(s):  
Chromatographic Method ◽  
Collaborative Study ◽  
Reversed Phase ◽  
Study Data ◽  
Water Detection ◽  
Liquid Chromatographic Method ◽  
Phase Liquid ◽  
Liquid Chromatographic ◽  
Technical Products

Abstract A liquid chromatographic method for determination of dithianon in technical products and formulations was evaluated by 22 laboratories participating in a collaborative study. Data received from 19 laboratories were used in the statistical analysis. The study included 3 technical grade materials, 1 suspension concentrate, and 1 wettable powder. Dithianon is determined by reversed-phase liquid chromatography on a C18 column with a mobile phase of acetonitrile and water. Detection at 254 nm with peak area measurements is used with an external standard for quantitation of dithianon. The liquid chromatographic method for determination of dithianon in technical products and formulations has been adopted first action by AOAC INTERNATIONAL.

scholarly journals Determination of Atrazine in Water by Magnetic Particle Immunoassay: Collaborative Study

1996 ◽  
Vol 79 (2) ◽  
pp. 529-537 ◽  
Author(s):  
Mary C Hayes ◽  
Scott W Jourdan ◽  
David P Herzog ◽  
P Barnes ◽  
C Charan ◽  
...  
Keyword(s):  
Detection Limit ◽  
Water Sample ◽  
Magnetic Particle ◽  
Collaborative Study ◽  
Study Data ◽  
Collaborative Studies ◽  
Enzyme Conjugate ◽  
Repeatability And Reproducibility ◽  
The Mean

Abstract A collaborative study was performed to determine mean recovery and precision for analysis of atrazine in drinking and surface waters by immunoassay. The study design was based on the blind duplicate test plan for collaborative studies. Three blank waters (municipal drinking water, well water, and surface water) were spiked at 3 atrazine levels. Two water samples with naturally incurred atrazine loads were also spiked with atrazine at 3 levels. In the enzyme-linked immunoassay method, the water sample is mixed with a pesticide–enzyme conjugate and added to paramagnetic particles with triazine-specific antibodies attached. After separation of antibody-bound atrazine and atrazine–enzyme conjugate from free components, the bound enzyme conjugate catalyzes a reaction producing a colored end product. The color developed is inversely proportional to the original concentration of atrazine in the water sample. Fourteen laboratories participated in the collaborative study. Data were analyzed for repeatability and reproducibility, and average recoveries at the spike levels were calculated. Over the concentration range tested, the mean recovery of atrazine spiked into blank and pesticide-contaminated waters was 104%. Overall RSDRaveraged about 40% for atrazine concentrations near the method detection limit (0.05 μg/L) and about 15% at concentrations above 5 times the detection limit (0.25 μg/L). Corresponding single-analyst RSDr values were 24 and 10%. Recovery and precision for the 3 blank water matrixes and the waters that had been naturally contaminated with atrazine showed no significant differences. The magnetic particle immunoassay

Probability of Load-Carrying Ability of Two-Profile Chain Drives

2000 ◽  
Author(s):  
Petro D. Kryvyy ◽  
Ihor M. Bey ◽  
Oksana I. Shymanska ◽  
Petro P. Kryvyy
Keyword(s):  
Measurement Procedure ◽  
Chain Drive ◽  
Distribution Law ◽  
Drive Roller ◽  
Load Carrying ◽  
A Chain ◽  
Dimension Type ◽  
Chain Drives ◽  
Unit Pressure

Abstract The analysis of the available calculation methods of chain-drives load-carrying ability is given according to the criterion of the tolerance unit pressure in a single profile chain joint [p]0. It is shown, that the values of [p]0 were determined according to the deterministic ideas without consideration of the distribution law of both random varieties of contact step of inner and outer rings and lengths of drive strands of the first and second profile of the chain drive. Probability task of determination of the tolerance unit pressure in two profile chain joints [p0]q is solved, when the structural, technological and physical-mechanical characteristic of the chain, that is, the lengths of drive strand of a chain-drive, accuracy of contact steps and stiffness of a drive roller chain are considered. The measurement procedure and the empirical dependencies for determination of drive roller chains deformation and stiffness are presented. As a result, the dependencies for the determination of [p0]q as the basic criterion according to which selection of a chain dimension-type, as well as characteristics used for the comparative estimation of a drive chain quality of different manufacturers when certain probability estimations are taken into consideration, were obtained.

Estimation of Uniaxial Material Properties by Miniature Small Punch Testing to Support Post-Irradiation Examination of RPV Steels

2020 ◽  
Author(s):  
Stefan Holmström ◽  
Oliver Martin ◽  
Theo Bakker ◽  
Murthy Kolluri ◽  
Matthias Bruchhausen
Keyword(s):  
Chemical Compositions ◽  
Test Technique ◽  
Small Punch ◽  
Uniaxial Test ◽  
Heat Treated ◽  
Pressure Vessel Steels ◽  
Material State ◽  
Damaged Materials ◽  
Reactor Pressure

Abstract The small punch (SP) test technique is expected to become a more common tool for estimating tensile properties since the technique has been approved for standardization and will be published early 2020 as EN-10371. The testing technique is naturally of interest in the nuclear field due to the small amount of material needed for estimating the properties of both virgin and irradiation damaged materials. In the project STRUMAT-LTO, supported within the Sustainable Nuclear Energy Technology Platform (SNETP), there is intention to use both miniature uniaxial test specimen as well as miniature SP specimen to assess the influence of high fluence irradiation on mechanical properties of the samples of the joint NRG-JRC irradiation campaign LYRA-10. The alloys represented in the irradiation campaign are variations of VVER and PWR reactor pressure vessel steels with tailor made chemical compositions. Four of the PWR model steels are tested here with miniature uniaxial specimens using the SP technique at room temperature (RT) and 100°C in as-received material state and at RT for heat treated (450°C / 40 h) material. The SP samples were extracted from used KLST (miniature Charpy) specimens. The results of this test program are expected to provide the basis for the future development of material property determination of irradiated materials.

Perspective on Adversity in Toxicology Evaluations

2020 ◽  
pp. 019262332094179
Author(s):  
Jeffery A. Engelhardt ◽  
Michael A. Dorato
Keyword(s):  
Study Data ◽  
Philosophical Perspective ◽  
Broad Approach

Determining adversity of effects in toxicology studies continues to pose a dilemma to practicing toxicologists and pathologists. How this determination is made may follow either a focused or broad approach to assessing the study data. The choice of which approach is best is dependent on a variety of factors. Therefore, we present a philosophical perspective on the determination of adversity across toxicology studies that may be applied in inhalation studies and those conducted by other routes of exposure.

scholarly journals Efficient Method for the Concentration Determination of Fmoc Groups Incorporated in the Core-Shell Materials by Fmoc–Glycine

Molecules ◽  
2020 ◽  
Vol 25 (17) ◽  
pp. 3983
Author(s):  
Elżbieta Szczepańska ◽  
Beata Grobelna ◽  
Jacek Ryl ◽  
Amanda Kulpa ◽  
Tadeusz Ossowski ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Core Shell ◽  
Amino Groups ◽  
The Core ◽  
Transmission Electron ◽  
Model Sample ◽  
Vis Spectroscopy ◽  
Fmoc Group ◽  
Synthesis Procedure

In this paper, we described the synthesis procedure of TiO2@SiO2 core-shell modified with 3-(aminopropyl)trimethoxysilane (APTMS). The chemical attachment of Fmoc–glycine (Fmoc–Gly–OH) at the surface of the core-shell structure was performed to determine the amount of active amino groups on the basis of the amount of Fmoc group calculation. We characterized nanostructures using various methods: transmission electron microscope (TEM), scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS) to confirm the modification effectiveness. The ultraviolet-visible spectroscopy (UV-vis) measurement was adopted for the quantitative determination of amino groups present on the TiO2@SiO2 core-shell surface by determination of Fmoc substitution. The nanomaterials were functionalized by Fmoc–Gly–OH and then the fluorenylmethyloxycarbonyl (Fmoc) group was cleaved using 20% (v/v) solution of piperidine in DMF. This reaction led to the formation of a dibenzofulvene–piperidine adduct enabling the estimation of free Fmoc groups by measurement the maximum absorption at 289 and 301 nm using UV-vis spectroscopy. The calculations of Fmoc loading on core-shell materials was performed using different molar absorption coefficient: 5800 and 6089 dm3 × mol−1 × cm−1 for λ = 289 nm and both 7800 and 8021 dm3 × mol−1 × cm−1 for λ = 301 nm. The obtained results indicate that amount of Fmoc groups present on TiO2@SiO2–(CH2)3–NH2 was calculated at 6 to 9 µmol/g. Furthermore, all measurements were compared with Fmoc–Gly–OH used as the model sample.

Sign in / Sign up

Export Citation Format

Share Document