The Use of Magnesium Carbonate in the Production of Various Ceramic Surfaces

يُعنى هذا البحث بدراسة (استخدام كاربونات المغنيسيوم في انتاج سطوح خزفية متنوعة)، والذي يقع في خمسة فصول: تضمن الفصل الأول عرضاً لمشكلة البحث والمحددة بالتساؤل الآتي: هل يمكن انتاج سطوح خزفية متنوعة بأستخدام كاربونات المغنيسيوم؟، وجاءت أهمية البحث والحاجة إليه من خلال تسليط ضوء معرفي بسيط على كيفية استثمار هذه المادة في انتاج سطوح خزفية بتأثيرات فنية متنوعة. أما هدف الدراسة فيكمن في: انتاج سطوح خزفية متنوعة بأستخدام كاربونات المغنيسيوم. أما الفصل الثاني: فقد تضمن الإطار النظري والدراسات السابقة، والذي تم التطرق فيه الى: الكثافة- درجة حرارة تحول الزجاج-  تطابق الزجاج - كاربونات المغنيسيوم (MgCO3) أما الفصل الثالث: فقد تضمن إجراءات البحث و تناولت فيه المواد والمركبات المستخدمة والية العمل. في حين اشتمل الفصل الرابع على نتائج البحث اما الفصل الخامس فقد اشتمل على الاستنتاجات، فضلاً عن التوصيات والمقترحات. وكانت اهم النتائج التي توصل اليها البحث: 1- يمكن انتاج سطوح خزفية متنوعة بأستخدام كاربونات المغنيسيوم. وظهر في مجمل العينات.2-ان فاعلية كاربونات المغنيسيوم في تمظهر السطوح الخزفية، بتأثيرات واشكال متنوعة ترتبط بشكل كبير باللزوجة والكثافة ودرجة الانصهار.وابرز الاستنتاجات 1- من خلال النتائج المتنوعة التي ظهرت في مختلف العينات نستطيع ان نتلمس  مدى فاعلية كاربونات المغنيسيوم (MgCO3) في تمظهر السطوح الخزفية، بتأثيرات واشكال متنوعة 2- ان تأثير فاعلية كاربونات المغنيسيوم (MgCO3) في الزجاج، لم يقتصر فقط على طبيعة الإظهار الشكلي للسطح، بل شمل ايضاً الإظهار الملمسي، ليكون الناتج سطوحاً خزفية غير التقليدية، كان بعضها اقرب الى التأثيرات الخاصة.This study deals with the study of the effectiveness of magnesium carbonates in the production of various ceramic surfaces, which is divided into five chapters. The first chapter deals with the problem of research, which is determined by the following question: Can different ceramic surfaces be produced using magnesium carbonates? , And the importance of research and the need for it through the shedding of a light knowledge of how simple to invest this material in the production of ceramic surfaces with various technical effects. The objective of the study is to: Recognize the effectiveness of magnesium carbonate in the production of various ceramic surfaces. The second chapter included the theoretical framework and previous studies, which dealt with: density - temperature of the transformation of the glass - match the glass - magnesium carbonate (MgCO3) The third chapter: included the search procedures, which included the materials and vehicles used and working mechanism. The fourth chapter included the results of the research. Chapter 5 included the conclusions, as well as the recommendations and proposals. The most important results of the research: 1 - can produce various ceramic surfaces influenced by magnesium carbonate. The effect of magnesium carbonate on the appearance of ceramic surfaces with various effects and shapes is strongly related to viscosity, density and melting point. The most significant results are: 1. The effect of magnesium carbonate (MgCO3) in glass, not only on the nature of the show, is the effect of magnesium carbonate (MgCO3) in the appearance of ceramic surfaces, But also the concrete representation, to produce non-traditional ceramic surfaces, some of which were closer to special effects

Production of Various Ceramic Surfaces Using Colimanite

ُعنى هذا البحث بدراسة (انتاج سطوح خزفية متنوعة بأستخدام الكوليمانيت)، والذي يقع في خمسة فصول: تضمن الفصل الأول عرضاً لمشكلة البحث والمحددة بالتساؤل الآتي: هل يمكن انتاج سطوح خزفية متنوعة بأستخدام الكوليمانيت؟، وجاءت أهمية البحث والحاجة إليه من خلال تسليط ضوء معرفي على كيفية استثمار هذه المادة في انتاج سطوح خزفية بتأثيرات فنية متنوعة. أما هدف الدراسة فيكمن في: انتاج سطوح خزفية متنوعة بأستخدام الكوليمانيت. أما الفصل الثاني: فقد تضمن الإطار النظري، والذي تم التطرق فيه الى: اللزوجة – زاوية التلامس في الزجاج -  تطابق الزجاج – الكوليمانيت - التيتانيوم) أما الفصل الثالث: فقد تضمن إجراءات البحث والتي تضمنت تناولت المواد والمركبات المستخدمة  والية العمل. في حين اشتمل الفصل الرابع على نتائج البحث اما الفصل الخامس فقد اشتمل على الاستنتاجات، فضلاً عن التوصيات والمقترحات.  وكانت اهم النتائج التي توصل اليها البحث: 1- يمكن انتاج سطوح خزفية متنوعة بأستخدام الكوليمانيت. كما ظهر في مجمل العينات.2- ان فاعلية الكوليمانيت في تمظهر السطوح الخزفية، بتأثيرات واشكال متنوعة ترتبط بشكل كبير باللزوجة والكثافة ودرجة الانصهار. وابرز الاستنتاجات 1- من خلال النتائج المتنوعة التي ظهرت في مختلف العينات نستطيع ان نتلمس  مدى فاعلية الكوليمانيت في تمظهر السطوح الخزفية، بتأثيرات واشكال متنوعة 2- ان تأثير فاعلية الكوليمانيت في الزجاج، لم يقتصر فقط على طبيعة الإظهار الشكلي للسطح، بل شمل ايضاً الإظهار الملمسي، ليكون الناتج سطوحاً خزفية غير التقليدية، كان بعضها اقرب الى التأثيرات الخاصة.This study is concerned with the study of the production of various ceramic surfaces using colimanite, which is divided into five chapters. The first chapter deals with the problem of research and is determined by the following question: Is it possible to produce various ceramic surfaces using colimanite? , And the importance of research and the need for it through the shedding of a light knowledge of how simple to invest this material in the production of ceramic surfaces with various technical effects. The objective of the study is to: Produce various ceramic surfaces using colimanite. The second chapter included the theoretical framework, which dealt with: viscosity - the contact angle in the glass - matching the glass - colimanite - titanium). The third chapter included the research procedures, which included the materials and vehicles used and the working mechanism. The fourth chapter included the results of the research. Chapter 5 included the conclusions, as well as the recommendations and proposals. The most important results of the research: 1 - can produce a variety of ceramic surfaces using collagenite. The effect of colimannite in the appearance of ceramic surfaces, with various effects and forms strongly related to viscosity, density and melting point. Highlights 1. Through the various results that appeared in various samples we can see the effectiveness of collagen in the appearance of ceramic surfaces , With various effects and forms. 2. The effect of collagenic activity in glass was not limited to the formal appearance of the surface, but also to the concrete representation. The result was non-traditional ceramic surfaces, some of which were closer to special effects

Tamoxifen Citrate- loaded synthetic high-density lipoproteins: Assessment of cellular toxicity in breast cancer cells

Tamoxifen Citrate (TC) is the standard endocrine therapy for estrogen receptor (ER) positive breast cancer. TC is a selective estrogen receptor modulator (SERM) whose estrogenic properties in uterus have been linked to increased side effects like blood clots, endometrial polyps and cancer. Therefore, significant amount of research has been carried out to develop tamoxifen loaded nano-formulations with a preferential accumulation in tumor tissue rather than healthy tissues. Synthetic high-density lipoproteins (sHDL) are novel nanocarriers with inherent active-targeting ability towards tumor cells through the ligand–receptor interaction between apolipoprotein A-I (Apo A-I) and scavenger receptor class B type I (SR-BI) overexpressed in various malignant cells. The current study was carried out to investigate whether encapsulation of TC in sHDL could improve the cytotoxic effect of TC against malignant cells. For this purpose, the cytotoxicity of TC-sHDL was evaluated in MCF-7 cell line in vitro. MTT assay demonstrated the increased cytotoxicity of TC-sHDL against cancer cells as compared with the cytotoxic effect of the free drug

Bioeffects of 1.5T Static Magnetic Field on the DNA Strand of Human Leukocytes in Vitroduring MRI Scan

Background: The non ionization of magnetic resonance fields effect sreported   with radical pair recombination. Which   is one of the familiar methods by which static magnetic felid interact with biological systems. Exposure to static magnetic fields can effect on the paramagnetic free radicals by increasing  the concentration, the activity and life time of paramagnetic free radicals, which might lead to genetic mutation, oxidative stress, and in some times with apoptosis. Objective: To estimate the genotoxicity on DNA molecule during expose to static magnetic field 1.5T of magnetic resonance imaging. Patients and Methods: The five blood   samples were irradiated  to 1.5T static magnetic field at different periods (10,20,30,40,and 50 minutes correspondingly). All exposures were performed at room temperature. Cellular  DNA damage had been  analyzed by the alkaline comet assay.                                                                     Results: The results approved a significant increasing  in the rate of recurrence of single-strand DNA breaks next to the  exposure of  a 1.5T of magnetic resonance imaging at 50 min. According to these  results the exposure with 3T magnetic resonance imaging encourage genotoxic effects in human lymphocytes could be suggested. Conclusion: To conclude, in the present study, employing alkaline comet assay, it has been demonstrated thatmagnetic resonance imaging- induced  DNA damages is significant in  leukocytes at 50 minute after exprosure to 1.5T magnetic resonance imaging

Nutritional Value and Physical Properties of Syrian Pine Nuts

This investigation aims to determine the nutritional value and physical traits of Syrian pine nut kernels and shells over time. Furthermore, the pine nut's composition and nutritional content are assessed concerning the latest climatic conditions. For each prepared sample, chemical analyses were done in two and physical analyses in three replicates, all according to a completely randomized design. The Homs District Agricultural Development Cooperative provided the pine nut shell samples used in this study. The sampling was conducted in May and June, taking subsamples of in-shell nuts from 25 kg bags. Every year, 15 subsamples were taken from various bags, and 33, 35, and 38 aggregate samples were generated. The in-shell nut quality showed seasonal variations concerning cracked and defective nuts, with crack rates spanning from 21 to 46% and 3 to 5%, respectively. The composition of the pine nut kernel was determined to have the following proportions: carbohydrates 12.19%, protein 32.18%, fat 43.2%, ash 4.93%, water activity 0.412, and moisture 4.31%. The elements with the greatest abundance were magnesium, phosphorus, and potassium. Additionally, kernels contain a high concentration of the minerals zinc and iron. The findings show that, compared to other Mediterranean pine nut sources, pine nut kernels cultivated in the Homs region are a rich source of several essential elements that positively impact public health

Mutual Coupling Reduction with a novel Fractal Electromagnetic Band Gap Structure

This work shows the effect of a novel Fractal based Electromagnetic Band Gap (FEBG) structure between dual PIFAs antenna elements. The FEBG structure without any shorting pins builds on a well-known fractal structure called Sierpinski carpet, where two iterations have been applied as a uniplanar EBG between dual PIFAs elements to increase the isolation. The proposed antenna can operate at approximately 2.65 GHz for wireless Long Term Evolution (LTE) application with compact design dimensions. The simulations are carried out with Ansoft HFSS ver 17.0. The second iterative order FEBG band-gap characteristic is verified using more computationally efficient analysis. An investigation on coupling reduction showed more than 27 dB, and 40 dB in E-plane and H-plane; respectively between the dual antenna elements is achieved for an antenna spacing less than half wavelength. The proposed antennas with and without second iterative order FEBG are fabricated and measured. The measurement results are in good agreement with the simulated results. Moreover, the envelope correlation of antenna elements with the proposed FEBG is quite smaller than that of antenna elements without FEBG, which gives the proposed system an excellent diverse performance and suitable for the use in low-frequency narrow-band MIMO applications

Description of energy levels and decay properties in 158Gd nucleus

In this paper, IBM-1 and IBM-2 with a SU(3) limit are used to describe the 158Gd isotope. The calculations of energy levels in the ground state, beta-, and gamma-bands are made up, which account for 15 energy levels. However, we found that the energy states of the same spin of the beta- and vibrational bands become degenerate states. In breaking the SU(3) dynamical symmetry by introducing a value of pairing interaction, the degeneracy is lifted and the energy levels are brought up to the same order as the experimental ones

Depression and sickness behavior are Janus-faced responses to shared inflammatory pathways

It is of considerable translational importance whether depression is a form or a consequence of sickness behavior. Sickness behavior is a behavioral complex induced by infections and immune trauma and mediated by pro-inflammatory cytokines. It is an adaptive response that enhances recovery by conserving energy to combat acute inflammation. There are considerable phenomenological similarities between sickness behavior and depression, for example, behavioral inhibition, anorexia and weight loss, and melancholic (anhedonia), physio-somatic (fatigue, hyperalgesia, malaise), anxiety and neurocognitive symptoms. In clinical depression, however, a transition occurs to sensitization of immuno-inflammatory pathways, progressive damage by oxidative and nitrosative stress to lipids, proteins, and DNA, and autoimmune responses directed against self-epitopes. The latter mechanisms are the substrate of a neuroprogressive process, whereby multiple depressive episodes cause neural tissue damage and consequent functional and cognitive sequelae. Thus, shared immuno-inflammatory pathways underpin the physiology of sickness behavior and the pathophysiology of clinical depression explaining their partially overlapping phenomenology. Inflammation may provoke a Janus-faced response with a good, acute side, generating protective inflammation through sickness behavior and a bad, chronic side, for example, clinical depression, a lifelong disorder with positive feedback loops between (neuro)inflammation and (neuro)degenerative processes following less well defined triggers

One Parameter Composite Semigroups of Linear Bounded Operators in Strong Operator Topology of Schatten Class Cp

For semigroups of linear bounded operators on Hilbert spaces, the problem of being in Cp , 0 Keyword