bluuebunny/crossref_metadata_2025 huggingface dataset:
Association between mild hyperthyrotropinemia and hypercholesterolemia in children with severe obesity
Authors: Iqbal Anoop Mohamed , Lteif Aida N. , Kumar Seema
Published: May 2019

Background

Severe obesity is associated with a number of cardiometabolic risk factors. Thyroid-stimulating hormone (TSH) levels are often slightly increased in children with obesity. The clinical significance of the mild elevation in TSH in children with obesity is unclear.

Objective

To examine the association between TSH and lipids in children with severe obesity.

Methods

We performed a retrospective analysis of records of children with severe obesity with simultaneous measurements of TSH and lipids. Children with TSH <0.3 mIU/L and ≥10 mIU/L were excluded. The relationship between TSH and lipids was evaluated using univariate/multiple variable linear and logistic regression.

Results

The study included 834 children (age 13.8 ± 4.1 years, males 46%, body mass index [BMI]: 36.9 ± 7.6 kg/m2; BMI z-score 2.6 ± 0.4). Seventy-four (8.9%) children had TSH between 5 and <10 mIU/L (high TSH [HTSH]). TSH was positively associated with non-high-density lipoprotein (HDL) cholesterol (β: 1.74; 95% confidence interval [CI] 0.29–3.20, p = 0.02). Total cholesterol and non-HDL cholesterol were higher in males with HTSH compared to those with normal TSH (175.5 vs. 163.5 mg/dL, p = 0.02 and 133.7 vs. 121.4 mg/dL, p = 0.02, respectively). The odds of elevated non-HDL cholesterol (≥145 mg/dL) was higher in males with HTSH relative to those with normal TSH (odds ratio [OR]: 2.78; 95% CI 1.35–5.69, p = 0.005).

Conclusions

TSH levels were positively associated with non-HDL cholesterol in children with severe obesity. Males with mildly elevated TSH had higher total cholesterol and non-HDL cholesterol compared to males with normal TSH. Further studies are warranted to determine if levothyroxine therapy would result in improvement in total cholesterol or non-HDL cholesterol in children with severe obesity with mildly elevated TSH.
Crystal structure of 2-((1H-benzo[d]imidazol-2-ylimino)methyl)-4,6-di-tert-butylphenol, C22H27N3O
Authors: Xing Ai-Ping , Zeng Dai , Zhang Shu-Ling , Wei Jun-Jun , Guo Da-Feng
Published: May 2019

C22H27N3O, monoclinic, P21/c (no. 14), a = 18.4984(4) Å, b = 11.4221(3) Å, c = 9.79600(19) Å, β = 90.9652(19)°, V = 2069.51(8) Å3, Z = 4, R
gt(F) = 0.0605, wR
ref(F
2) = 0.1773, T = 293(2) K.
Crystal structure of benzylbis(1,3-diphenylpropane-1,3-dionato-κ2
O,O′) chloridotin(IV), C37H29ClO4Sn
Authors: Lee See Mun , Lo Kong Mun , Tiekink Edward R.T.
Published: May 2019

C37H29ClO4Sn, monoclinic, P21/c (no. 14), a = 10.4233(3) Å, b = 19.5060(6) Å, c = 14.8084(5) Å, β = 94.148(2)°, V = 3002.91(16) Å3, Z = 4, R
gt(F) = 0.0432, wR
ref(F
2) = 0.1036, T = 296(2) K.
Crystal structure and optical properties of 1,6-bis(methylthio)pyrene, C18H14S2
Authors: Wang Guang-Qing , Fang Hong-Bo , Xu Li-Hua , Ni Zhong-Hai
Published: May 2019

C18H14S2, monoclinic, P21/c (no. 14), a = 10.196(3) Å, b = 14.756(4) Å, c = 9.508(3) Å, β = 103.965(14)°, V = 1388.3(7) Å3, Z = 4, R
gt(F) = 0.0480, wR
ref(F
2) = 0.1207, T = 200(2) K.
The crystal structure of (E)-3-(4-(dimethylamino)styryl)-5,5-dimethylcyclohex-2-en-1-one, C18H23NO
Authors: Asiri Abdullah M. , Arshad Muhammad Nadeem , Albukhari Soha M. , Al-Soliemy Amerah M. , Khan Salman A.
Published: May 2019

C18H23NO, triclinic, P1̄ (no. 2), a = 6.0033(3) Å, b = 11.5667(7) Å, c = 23.5556(12) Å, α = 77.121(5)°, β = 89.635(4)°, γ = 78.852(5)°, V = 1563.27(15) Å3, Z = 4, R
gt(F) = 0.0630, wR
ref(F
2) = 0.1733, T = 296(2) K.
Controlled allylation of polyelectrolytes: a deep insight into chemical aspects and their applicability as building blocks for robust multilayer coatings
Authors: Nguyen Thi-Thanh-Tam , Belbekhouche Sabrina , Auvergne Rémi , Carbonnier Benjamin , Grande Daniel
Published: May 2019

Polyelectrolytes (PEs) bearing easily derivatizable functions for possible post-modification under mild conditions can find a broad range of applications in various fields. The present paper describes the successful controlled side-chain allylation of two types of PEs: polyamine-based polycations, i.e. poly(allylamine hydrochloride) (PAH) and branched polyethyleneimine (PEI), and strong polyanions, i.e. poly(sodium vinyl sulfonate) (PVS) and poly(sodium 4-styrene sulfonate) (PSS). PSS has been largely investigated in the literature, while PVS is much less commonly explored. The allylation of each type presents its own drawback, i.e. heterogeneous reaction in the case of strong polyanions and instability of partially protonated allylated polyamine products. Nevertheless, all encountered difficulties could be solved and thoroughly elucidated by different experimental tests. This partial allyl-functionalization does not affect the electrolytic properties of the newly allylated PEs, as evidenced by the effective construction of two series of polyelectrolyte multilayer (PEM) films, namely PEI-ene (PSS-ene/PAH-ene)4 and PEI-ene (PVS-ene/PAH-ene)4, the latter being one of the rare examples developed in the literature. The presence of allyl groups on the PE side-chains allows for the stabilization of the resulting PEM films via thiol-ene photo-crosslinking in the presence of a water-soluble dithiol crosslinker. In order to fix permanently the resulting crosslinked PEM films on substrates, the covalent crosslinking occurs not only between different C=C bonds on PE layers but also with those present on substrates preliminarily functionalized with allyl groups via sulfur–gold chemistry. The robustness of both resulting crosslinked PEM films under strongly basic solution (pH 14) is validated by Quartz Crystal Microbalance (QCM) measurements. The versatility and effectiveness of the present approach is expected to find potential applications in different scientific and technological fields.
Thermodynamic description of U(VI) solubility and hydrolysis in dilute to concentrated NaCl solutions at T = 25, 55 and 80 °C
Authors: Endrizzi Francesco , Gaona Xavier , Zhang Zhicheng , Xu Chao , Rao Linfeng , Garcia-Perez Carmen , Altmaier Marcus
Published: May 2019

The solubility and hydrolysis of U(VI) were investigated in 0.10–5.6 m NaCl solutions with 4 ≤ pHm ≤ 14.3 (pHm = −log [H+]) at T = 25, 55 and 80 °C. Batch experiments were conducted under Ar atmosphere in the absence of carbonate. Solubility was studied from undersaturation conditions using UO3 · 2H2O(cr) and Na2U2O7 · H2O(cr) solid phases, equilibrated in acidic (4 ≤ pHm ≤ 6) and alkaline (8.2 ≤ pHm ≤ 14.3) NaCl solutions, respectively. Solid phases were previously tempered in solution at T = 80 °C to avoid changes in the crystallinity of the solid phase in the course of the solubility experiments. Starting materials and solid phases isolated at the end of the solubility experiments were characterized by powder XRD, SEM-EDS, TRLFS and quantitative chemical analysis. The enthalpy of dissolution of Na2U2O7 · H2O(cr) at 25–80 °C was measured independently by means of solution-drop calorimetry. Solid phase characterization indicates the transformation of UO3 · 2H2O(cr) into a sodium uranate-like phase with a molar ratio Na:U ≈ 0.4–0.5 in acidic solutions with [NaCl] ≥ 0.51 m at T = 80 °C. In contrast, Na2U2O7 · H2O(cr) equilibrated in alkaline NaCl solutions remains unaltered within the investigated pHm, NaCl concentration and temperature range. The solubility of Na2U2O7 · H2O(cr) in the alkaline pHm-range is noticeably enhanced at T = 55 and 80 °C relative to T = 25 °C. Combined results from solubility and calorimetric experiments indicate that this effect results from the increased acidity of water at elevated temperature, together with an enhanced hydrolysis of U(VI) and a minor contribution due to a decreased stability of Na2U2O7 · H2O(cr) under these experimental conditions. A thermodynamic model describing the solubility and hydrolysis equilibria of U(VI) in alkaline solutions at T = 25–80 °C is developed, including

log 

*

K

s
,
0

°

{

Na

2

U
2

O
7

⋅

H
2

O
(
cr
)
}
,

 log 

*

β

1
,
4

∘

$\log^* {\rm K}_{\rm s,0}^{\circ} \ \{{\rm Na}_{2}{\rm U}_{2}{\rm O}_{7} \cdot {\rm H}_{2}{\rm O}({\rm cr})\}, \log^{*} \beta _{1,4}^{\circ} $

and related reaction enthalpies. The standard free energy and enthalpy of formation of Na2U2O7 · H2O(cr) calculated from these data are also provided. These data can be implemented in thermodynamic databases and allow accurate solubility and speciation calculations for U(VI) in dilute to concentrated alkaline NaCl solutions in the temperature range T = 25–80 °C.
Biodiesel fuel synthesis by interesterification of triglycerides with carboxylate esters of low molecular weight
Authors: Sendzikiene Egle , Makareviciene Violeta
Published: May 2019

The ever-increasing environmental pollution from greenhouse gases motivates the search for methods to reduce it. One such method is the use of biodiesel fuels in the transport sector. Conventional biodiesel production generates up to 10% of a by-product, raw glycerol, whose amount continues to increase as biodiesel production volumes expand, but its demand remains limited. Recently, options have been analysed to replace the triglyceride transesterification process generally used in biodiesel production with an interesterification process that does not generate raw glycerol, instead yielding triacylglycerol that can be directly used as fuel for diesel engines by mixing with fatty acid esters. Additionally, triacylglycerol improves the low-temperature properties of fuel. The present article discusses triglyceride interesterification processes using various carboxylate esters of low molecular weight. Information is provided on raw materials that can be subjected to interesterification for biodiesel synthesis. The possible applications of chemical and enzymatic catalysis for triglyceride interesterification are discussed, and the influence of the catalyst amount, molar ratio of reactants, temperature and process duration on the effectiveness of interesterification is examined. The conditions and effectiveness of noncatalytic interesterification are also discussed in the article. Qualitative indicators of the products obtained and their conformity to the requirements of the European standard for biodiesel fuel are discussed.
Vowel reduction in English -mancompounds
Authors: van de Weijer Jeroen , Sloos Marjoleine , Wei Weiyun
Published: May 2019

We investigate the pronunciation of English compounds ending in-man(e.g.policeman, clergyman, mailman), some of which are usually pronounced with a full vowel in -man(mailman), some usually with a reduced vowel (policeman), while other words vary between the two (businessman, gunman). Is it possible to predict when the vowel is reduced or not? We investigate a number of factors that could play a role in this issue: (i) the age of introduction of the word into the English language, (ii) the frequency of the word in the synchronic language, (iii) the meaning of -manin the specific compound, (iv) number of syllables, (v) stress pattern and (vi) spelling variation. Although some of these points have been discussed in the literature before, we present the first large full-scale quantitative investigation of the question whether any of these factors are reliable predictors of the pronunciation (and if so, which one predicts the pronunciation best), as well as the interaction between these factors.
Electrical Conductivity of Magnesium Oxide/Molten Carbonate Eutectic Coexisting System
Authors: Nikolaeva Elena V. , Bovet Andrey L. , Zakiryanova Irina D.
Published: May 2019

The electrical conductivity of molten ternary alkali carbonate eutectic, coexisting with MgO particles, has been investigated. The conductivity was measured by the AC impedance method. The apparent activation energy ΔEa
increased with the MgO content. This fact can be attributed to the effect of the solid phase. The specific conductivity of those systems could not be described using the Maxwell model over the solvation process of the carbonate ions on the particles of the magnesium oxide.
Es gibt ein richtiges Leben nur im Falschen
Authors: Koerrenz Ralf
Published: May 2019

This article argues in the form of an essay that there is a specifically Hebrew grounding of democracy. It is based on an interpretation of the Torah. The different structure of the covenant with Noah and Abraham on the one hand and with the people in the context of the Exodus on the other hand plays the decisive role in this question. In the Exodus, the covenant between God and Israel may be implemented only with the consent of all the people to its social, legal and cultic contents. All this happens, however, under the auspices of a negative anthropology. In principle, only a life in the postparadiesiam, “false” structures of any given political constitution is possible for humanity. These, however, can be shaped above all by legal and social regulations in such a way that the consequences of alienation are positively minimized and the possibility of a flourishing life within such “false” structures can emerge.
By any other name? The impacts of differing assumptions, expectations, and misconceptions in bringing about resistance to student-staff partnership
Authors: Healey Ruth L , Lerczak Alex , Welsh Katharine , France Derek
Published: May 2019

Most of the existing literature on student-staff partnership explores the experiences of people who are keen to be involved and who have already bought into the ethos of Students as Partners. We explore the challenges of conducting student-staff partnership in the context of resistance. Specifically, we focus on the interpretations of partnership by students and staff who were attempting to work in partnership for the first time in a medium-sized geography department in the UK The views of participants were captured during a six-month project in which four undergraduate students were employed to work with eight academics to redesign the second-year undergraduate curriculum of one programme. Notwithstanding an introductory briefing and ongoing support, some participants showed indications of resistance. Our findings suggest that different perspectives on partnership influenced participants’ experiences. We argue that assumptions, expectations, and misconceptions around the terminology used to describe Students-as-Partners practice may hinder the process itself, as some people may not buy in to the practice. However, despite the challenges of this project, the experience of being involved in the re-design of the modules has led to reduced resistance and emerging partnership practices throughout the department.
Becoming partners: Faculty come to appreciate undergraduates as teaching partners in a service-learning teaching assistant program
Authors: Begley Gail S , Berkey Becca , Roe Lisa , Schuldt Hilary E. Y.
Published: May 2019

This study examined the relationships between faculty and their teaching assistants in an undergraduate teaching assistant program developed at Northeastern University in the US to ease the challenges faculty faced in incorporating Service-Learning into their teaching. Feedback from faculty suggested that the undergraduates trained to assist them with purely logistical tasks were becoming partners in teaching. To explore the relationship between faculty and their teaching assistants and better understand how the faculty may have come to view the teaching assistants as partners, we conducted in-depth interviews with faculty across a range of academic disciplines and experience levels who had worked with one or more undergraduate teaching assistants. The data revealed that while the faculty participants did appreciate receiving logistical assistance with Service-Learning, they also benefited from partnering with students as colleagues who supported their teaching more broadly. We also found that faculty viewed the partnership in different ways depending on their level of experience with Service-Learning pedagogy.
Challenging spaces: Liminal positions and knowledge relations in dynamic research partnerships
Authors: Wallin Patric , Aarsand Liselott
Published: May 2019

This article draws upon concepts of liminality and Third Space to explore what happens when undergraduate students become research partners and illustrates how various positions emerge, change, and fluctuate within the educational space of an interdisciplinary course. Based on perspective dialogues with student groups who have worked on research projects concerned with learning environments in higher education, we discuss which experiences from various academic spaces the students make relevant and useas resources in their group work. Furthermore, we highlight how the act of challenging traditional knowledge hierarchies and well-established roles also involves a revision of students’ relations to each other.
Opportunities presented by the forced occupation of liminal space
Authors: Kupatadze Ketevan
Published: May 2019

In this article I employ the notion of the Third Space as a point of departure in order to expand and complicate our thinking about student-faculty partnerships, with the goal of enquiring into the acceptability of and comfort with such space for faculty who self-identify as underrepresented. I consider the practical and real repercussions for these faculty members of engaging in partnership in the context of a reality that is very much shaped by dominant cultural practices, and racial, social, and cultural hierarchies and divisions, and look at how the concept of the liminal space plays out in their professional lives. The findings presented in the article come out of a qualitative analysis of oral semi-structured interviews with underrepresented faculty.
Special section editorial: Students as partners in Third Spaces
Authors: Hawley Sara , McDougall Julian , Potter John , Wilkinson Phil
Published: May 2019

N/A
A Qualitative Study of HIV “Test-and-Treat” Experience Among Men Who Have Sex With Men in Malaysia
Authors: Lim Sin How , Alias Haridah , Kien Jeremy Kwan Wing , Akbar Mohd , Kamarulzaman Adeeba , Wong Li Ping
Published: May 2019

This study aimed to examine the barriers and facilitators to HIV testing and treatment among Malaysian MSM. Between June 2014 and December 2015, in-depth interviews were conducted in 20 HIV-positive MSM recruited from a teaching hospital and NGO in Kuala Lumpur. Thematic analysis was used to identify, analyze, and report themes. Most participants investigated their HIV status after long period of sickness. Others sought testing upon partner's diagnosis and some were diagnosed via blood donation. Barriers to testing include personal (perceived good health, fear of positive result, denial); social and structural factors (stigmatization by health providers and family, lack of information about free HIV testing and long wait time). Barriers to treatment comprise personal factors (perceived HIV as incurable and treatment as complicated), social factors (HIV and homosexual stigma), and cost. Promoting benefits of regular testing and early treatment is needed to improve HIV care continuum among MSM in Malaysia.
Mr. Song's Cheeses: Southern China, 1368–1644
Authors: Brown Miranda
Published: May 2019

This article documents the presence of cheese in the culinary traditions of southeast China between the fourteenth and seventeenth centuries through a close analysis of a single recipe collection, Mr. Song's Book of Nourishing Life. It opens by examining Mr. Song's techniques for cheesemaking, exploring his many culinary applications for cheese, and situating his interest in dairy within the broader tradition of cheesemaking of his place and time. By reconstructing the flavors of centuries past, this article recovers a forgotten tradition of cheesemaking in southern China and challenges popular stereotypes about traditional Chinese cuisine being dairy-free.
Can Globular Clusters in the Galaxy Be Classified by the Velocity Anisotropy Parameter?
Authors: Tadjibaev I. U. , Nuritdinov S. N.
Published: May 2019

Classification problems of globular star clusters in the Galaxy have been briefly discussed. The values of the velocity anisotropy parameter are calculated for 36 globular clusters, by using relatively new data for their apparent surface density. Those values are grouped into three classes. The correlation of the examined parameter with other parameters of globular clusters is analyzed.
Synthesis of Carbon Nanotubes from Graphite and Investigation of the Catalytic Activity of MWCNTs/Cr2O3–NiO with the Removal of Bismarсk Brown G Dye from Its Aqueous Solution
Authors: Mohammad E. J. , Kareem M. M. , Atiyah A. J.
Published: May 2019

This work describes the synthesis of carbon nanotubes from graphite by the chemical precipitation method and nanocomposites of multiwall carbon nanotubes (MWCNTs) with co-oxide nanocomposite (MWCNTs)/MO(Cr2O3–NiO). Those nanocomposites were prepared with the use of a simple evaporation and a drying process. The obtained composites were characterized, by using X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and Raman spectroscopy. The activity of the prepared composites was investigated by the following removal of a Bismarck brown G dye (BBG) from the aqueous solution via photocatalytic reactions. The efficiency of the photocatalytic dye removal over the prepared composites was 91.43% after one hour of reaction under the optimal conditions, which were a mass dosage of 0.03 g, pH = 5, and a temperature of 30 ∘C.
Parameters of Charge Carrier Traps in ZnSe
Authors: Degoda V. Ya. , Alizadeh M.
Published: May 2019

Taking zinc selenide (ZnSe) crystals as an example, a procedure of determination of the main parameters of traps is proposed. At first, the conductivity type (electron or hole one) in a crystal of phosphor at its excitation is determined with the help of photoelectric studies or studies of the thermionic emission or thermal or photo-thermal emf. Then the energy of the thermal electron delocalization is determined, e.g., by using the method of thermally stimulated luminescence with sequential fractional heating. As a result, the frequency factors of corresponding traps are found as well. Knowing the effective electron mass, it is easy to calculate the effective density of electron states in the conduction band. Finally, the cross sections of the free-electron localization and their temperature dependences can be determined for all traps from a simple equation.
Density of Defect States and Spectra of Defect Absorption in a-Si:H
Authors: Ikramov R. G. , Nuriddinova M. A. , Jalalov R. M.
Published: May 2019

Spectral characteristics of the coefficient of defect absorption in amorphous hydrogenated silicon have been studied. The characteristics are determined, by analyzing the electron transitions occurring with the participation of the energy states of dangling bonds. It is shown that the principal role in the formation of the defect absorption coefficient value is played by the electron transitions between defect and non-localized states. It is also shown that the spectral characteristics are mainly determined by the distribution function of the electron density of states in the valence or conduction band. It is found that the maxima in the spectrum of the defect absorption coefficient are observed only if there are pronounced maxima in the density of states at the edges of allowed bands.
Distinctive Features of Metal-Insulator Transitions, Multiscale Phase Separation, and Related Effects in Hole-Doped Cuprates
Authors: Dzhumanov S. , Khidirov I. , Kurbanov U. T. , Khudayberdiev Z. S. , Rashidov J. Sh.
Published: May 2019

We study the distinctive features of the metal-insulator transitions, multiscale phase separation, and evolution of coexisting insulating and metallic/superconducting phases in hole-doped cuprates. We show how these interrelated phenomena and related effects manifest themselves in a wide doping range from the lightly doped to optimally doped regime in these systems, where the localized and mobile hole carriers reside in hole-poor (insulating) and hole-rich (metallic or superconducting) regions. We argue that small hole-rich regions (i.e. narrow nanoscale metallic islands or stripes) can persist in the insulating phase of the lightly doped cuprates, while the competing insulating, metallic, and superconducting phases would coexist in the under-doped cuprates. When the doping level is increased further, the hole-poor regions (or insulating zones) gradually narrow from macroscale to nanoscale insulating stripes and disappear in the optimally doped cuprates. We demonstrate clearly that the metal-insulator transitions and the coexisting insulating and metallic/superconducting phases are manifested in the suppression of superconductivity in underdoped cuprates and in the different temperature-dependent behaviors of the magnetic susceptibility and c-axis resistivity of lightly to optimally doped cuprates.
Electron-Phonon Scattering in Quantum-Sized Films with the Hyperbolic Pöschl–Teller Potential
Authors: Gasanov Kh. A. , Guseinov J. I. , Abbasov I. I. , Askerov D. J. , Sadig Kh. O.
Published: May 2019

A quantitative theory of electron-phonon interaction in the two-dimensional electron gas in a quantum-sized film with the hyperbolic P¨oschl–Teller confining potential has been developed. Analytical expressions for the transition probability are derived in the case of electron scattering by deformation-induced acoustic, piezoacoustic, and polar optical phonons. The results obtained for various scattering mechanisms in the film are compared with the results obtained for bulk crystals.
A Model of Gas Diffusion in a Metal Plate with Phase Transformation
Authors: Vasilev A. N.
Published: May 2019

A model of gas diffusion in a metal plate has been proposed, in which a phase transformation “metal–gassed metal” takes place, when the gas concentration exceeds a certain critical value, and the properties of the system change qualitatively. The phase transformation is modeled by changing the coefficient of gas diffusion. In particular, a system of two phases with different diffusion coefficients and a moving interface between them is considered. The gas concentrations in both phases at the interface are assumed to be the known constants. An analytical solution is obtained in the approximation that the diffusion in the metal phase (the initial state of a metal layer) is much quicker than that in the gassed-metal one, with the both being much quicker than the motion of the phase interface. In the framework of this model, the spatial distribution of the gas concentration in the gassed-metal phase is calculated, and the analytic formula describing the motion of a phase interface is derived.
Profil Dan Sensitivitas Protein Alergen Ikan Tongkol (Thunnus albacares) Sebagai Reagen Skin Prick Test (SPT)
Authors: Chalid Sri Yadial , Syah Dahrul , Giriwono Puspo Edi , Rungkat Fransiska , Zakaria Zakaria
Published: May 2019

Ikan tongkol merupakan salah satu produk laut penyebab alergi makanan. Gejala klinis reaksi alergi makanan adalah gatal, bentol, bengkak, sesak nafas, batuk, dan yang terparah adalah syok anafilaksis. Pengobatan dan pencegahan alergi makanan yang terbaik adalah menghindari konsumsi penyebab alergi. Menghindari konsumsi suatu makanan sebaiknya berdasarkan uji alergi seperti Skin Prick Test (SPT). SPT dilakukan menggunakan reagen SPT yang dicukitkan pada lapisan epidermis kulit lengan bagian volar. Reagen alergen pada penelitian ini merupakan protein ikan tongkol yang berasal dari laut Indonesia dan diekstrak dengan buffer fosfat, Profil ekstrak protein menggunakan elektroforesis dan immunoblotting untuk menentukan protein allergen. Sebanyak 15 pita protein terdeteksi pada ekstrak ikan tongkol yaitu protein dengan berat molekul antara 17 sampai 152 kDa. Potensi alergenik terdapat pada pita protein dengan berat molekul antara 12 sampai 50 kDa. Reagen SPT ikan tongkol mempunyai sensitivitas sebesar 81.8% dan spesifitas 100% sehingga disimpulkan bahwa reagen ekstrak ikan tongkol dapat digunakan sebagai reagen skin prick test Kata kunci: Alergi, protein, tongkol, gejala klinis, skin prick test   Tuna fish is one of the marine products that can cause allergic. Clinical symptoms of allergic are a bump, swelling, shortness of breath, coughing and anaphylactic shock is the worst symptom. The best medication and treatment is avoiding the consumption of food that could cause allergy. Avoiding consumption of food should be based on an allergy test such as a Skin Prick Test (SPT). SPT using reagent which is applied on the skin of the forearm between the wrist and elbow. The reagent for SPT is a protein solution of tuna which was extracted by phosphate buffer then protein profile was detected using electrophoresis. Immunoblotting was done to determine the molecular weight of the allergen protein. Fifteen protein bands were detected on tuna fish extract; the molecular weight of the protein was obtained between 17 to 152 kDa. Protein allergenic are molecules that have protein bands with a molecular weight between 12 and 50 kDa. Tuna fish extract solution for SPT had a sensitivity is 81.8%, and specificity is 100%, it was concluded that tuna fish reagent could be used as SPT reagent. Keywords: Allergen, protein, tuna fish, skin prick test.
Colloidal Silica Films as Substrates for High Density DNA
Arrays
Authors: Glazer M. , Frank C. , Lussi J. , Fidanza J. , Mcgall G.
Published: May 2019

Two processes for depositing colloidal silica films that can be used as high
surface area substrates for DNA arrays are presented. The films boost the
hybridization signal above that obtainable from the same lateral area of a
“flat” array. In the first process, colloidal silica is deposited directly
from solution. In the second, a templating technique is introduced to give
added control over the pore size and porosity of the film. Polymer latex is
co -deposited with the silica and then pyrolyzed, resulting in larger pores
and higher porosity. Both types of films are tested for functional
performance with DNA arrays and show promising results.
Controlled Synthesis of Perfluoroaryl Functionalized Hybrid
Materials for Optical Applications based on NMR Spectroscopy and Molecular
Modeling
Authors: Kahlenberg Frank , Buestrich Ralf , Popall Michael
Published: May 2019

The synthesis of ORMOCER®*s (inorganic-organic polymers) for
optical applications is studied in detail. Producing waveguide materials
with the desired low optical losses at wavelengths of 1310 and 1550 nm
requires a thorough control of the initial inorganic network formation,
because absorption losses are particularly due to Si-OH bonds beside
aliphatic C-H bonds. Therefore, the synthesis of UV- or thermally curable
organopolysiloxane resins with minimized Si-OH content is crucial. The
investigation of the sol-gel reaction of organoalkoxysilanes by
29Si-NMR spectroscopy provides a detailed insight into the
influence of reaction conditions on the species and networks formed.
Reaction parameters were optimized towards the formation of ORMOCER® resins
suitable for waveguide applications. Finally, the material synthesis is
completed by crosslinking organically polymerizable units present in the
ORMOCER® resin to establish the inorganic-organic hybrid network. The
experimental work is accompanied by computational chemistry. Calculating
electronic properties is of value in predicting silane reactivities as well
as spectroscopic data of intermediates. Molecular modeling is a convenient
tool for the visualization of structural details on the molecular level.
An Organotin Oxo-Carboxylate Cluster Functionalized by
Triethoxysilyl Groups
Authors: Ribot François O. , Minoux Delphine , Sanchez Clément
Published: May 2019

The organotin oxo-carboxylate cluster
{BuSnO(O2CC6H4-4-NH2)}6
(1), which exhibits a hexagonal prismatic oxo-core, was synthesized from
BuSnO (OH) and p-aminobenzoic acid. Its peripheral functionalization with
triethoxysilyl moieties was achieved through the reaction with
3-isocyanatopropyltriethoxysilane (ICPTES) which preserves the
oxo-carboxylate framework and yields
{BuSnO[O2CC6H4-4-NHC (O)NH
(CH2)3Si (OEt)3]}6 (2). Both
compounds were characterized by multinuclear NMR (119Sn,
1H, 13C, 29Si).
Organic-Inorganic Hybrid Particles by Dendrimer
Nanotemplating
Authors: Gröhn Franziska , Bauer Barry J. , Amis Eric J.
Published: May 2019

Poly (amidoamine) (PAMAM) dendrimers are used to create organic-inorganic
hybrid colloids in aqueous solution. The formation of gold colloids upon
reduction of a gold salt precursor serves as a model reaction to study the
influence of reaction conditions and dendrimer generation on the resulting
nanostructures. The hybrid particles were characterized by transmission
electron microscopy (TEM), small angle neutron scattering (SANS), and small
angle x-ray scattering (SAXS). A transition is found from “colloid
stabilization” by low molecular mass molecules to “polymer nanotemplating”
with increasing dendrimer generation, i.e, increasing molecular mass but
retaining the chemical nature of the stabilizing species.
Hollow Microspheres of Porous Silica Prepared Starting from a
Hybrid Containing Chitosan
Authors: Retuert Pedro J. , Quijada Raul , Lafourcade Catalina
Published: May 2019

The combination of sols containing silica polymers, prepared by the sol-gel
method under conditions of nearly linear chain growth, with solutions of the
biopolymer chitosan has allowed us to obtain hybrid materials in the form of
films or particles. In these hybrid nanocomposites, the organic and
inorganic phases are associated through hydrogen bonds. In this work we
present the preparation of hybrid xerogels of spherical morphology and their
transformation into hollow spherical particles of silica with high specific
area (276 m2/g) and a pore volume of 0.23 cm3/g. The
xerogel particles were obtained by precipitation and subsequent drying.
Thereafter, chitosan was extracted partially with acetic acid (5%) and
finally the product was calcined at 550°C for two hours. The SEM micrograph
shows that the silica particles were obtained as hollow spheres with size in
the range between 10 and 100 μm. By using larger magnification, it was found
that much smaller spheres of about 0.01 μm constitute the surface of these
hollow spheres. Porosimetry shows the presence of micropores as well as
mesopores. The observed morphology is discussed on the basis of a
coprecipitation process conditioned by an association of both organic and
inorganic phases in the precursor hybrid sol.
Fabrication of Polystyrene/CdS Hybrid Nanocomposites Embedded
with CdS Nanowires by a Soft Solution-Processing Route
Authors: Yu Shu-Hong , Yoshimura Masahiro
Published: May 2019

A novel one-step soft solution-processing (SSP) route called
solvothermal-co-polymerization technique was successfully developed for
in situ fabrication polystyrene (PS)/CdS nanocomposites
embedded with CdS nanowires in ethylenediamine media at lower temperature
(80–140°C). In this route, the polymerization of the styrene monomers and
the formation of the CdS nanocrystallites occur simultaneously in a certain
temperature range. The results show that the quantum-fined CdS nanowires
with diameters 4–15 nm and lengths up to several micrometers via the present
one-step route were embedded in the PS matrix and had [001] preferential
orientation. Both temperature and solvent were found to play a key role in
the synthesis of the nanocomposites. The produced novel hybrid
nanocomposites display obvious quantum size effects and interesting
fluorescence features.
Polysilsesquioxanes Through Base-Catalyzed Redistribution of
Oligohydridosiloxanes
Authors: Rahimian Kamyar , Assink Roger A. , Lang David P. , Loy Douglas A.
Published: May 2019

Organopolysilsesquioxanes have recently gained much interest as materials
for low-K dielectrics [1], ceramic precursors [2] and photoresists [3].
Typical sol-gel synthesis of polysilsesquioxanes involves the hydrolysis of
organotricholorosilanes and/or organotrialkoxysilanes in the presence of
acid or base catalysts and organic solvents. However, under sol-gel
conditions most organotrialkoxysilanes do not afford silsesquioxane gels.
This limits the range of organic functionalities that can be introduced into
these hybrid organicinorganic materials.
Mechanical Quality Factor of Lead Zirconate Titanate/Epoxy
Composites
Authors: Cheng K.C. , Chan H.L.W. , Or S.W. , Choy C.L.
Published: May 2019

The mechanical quality factor Qm of 1–3 piezoelectric lead zirconate titanate/epoxy composites with
ceramic volume fractions φ ranging from 0.18 to 0.82 has been measured. This
range of φ is wider than those previously investigated by other workers. The
width-to-thickness ratio of the ceramic phase is sufficiently small that
there are no significant mode couplings. The observed Qm agrees well with the prediction of the parallel model. It is found
that Qm increases from 34 to 100 as φ changes from 0 to 0.82 and then
increases sharply to reach a high value of 600 at φ = 1. Therefore
Qm can be tailored to give a wide range of values by varying φ.
PHÂN VÙNG CHỨC NĂNG CHO QUẢN LÝ TỔNG HỢP ĐỚI BỜ TỈNH THÁI BÌNH
Authors: Cu Nguyen Van , Muon Nguyen Van , Cuong Nguyen Quoc , Huong Bui Thi Thanh , Anh Tran Thi Ngoc
Published: May 2019

On the basis of analyzing natural conditions, resources, current exploitation status and functional zoning principles and criteria, functional zoning maps for integrated coastal management in Thai Binh were incorporated. Results suggested classifying Thai Binh coasts into two functional zones: Urban and multi-economic development zone and ecological conservation and recovery with economic development and national defense zone. Then, zone 1 and zone 2 were classified into 3 and 4 different functional sub-regions respectively with suitable proposal of prior activities and management. This research is an important basis for coastal development and intergrated coastal management in Thai Binh.
MORPHOLOGICAL CHARACTERISTICS OF THE GIANH RIVER (FROM CO CANG TO CUA GIANH) IN RELATION TO THE EROSION AND ACCUMULATION
Authors: Tien Hai Nguyen , Hai Dang Vu , The Phuc La , Thai Ha Nguyen
Published: May 2019

On the basis of morphological characteristics and erosion - accumulation of sediment, it is possible to divide the stretch of the Gianh River from Co Cang to Cua Gianh (about 54km in length) into 3 sections as follows: Meandering channel (from Co Cang to Tien Xuan Isles): the length of the channel is 27.69km and the width of the channel is 80-250m. The channel is in the form of a meandering, narrow riverbed, flow plays a dominant role, deposition activities develop strongly at the convex side, while erosion occurs strongly in the concave side (cut side); Braided channel (from Tien Xuan Isles to Quang Phu): the length of the channel is 17.06km and the width of the channel is 800-2,200m. The channel is straight, the river bed is large and the depth of the river bed is 2-11m. Sedimentation occurs mainly at the bottom of the channel and creates bar in the middle of the channel; Straight channel (from Quang Phu to Cua Gianh): the length of the channel is 9.23km and the width of the channel is 800-1,000m. The channel is straight and the depth of the river bed is 8-12.5m. In addition to the role of river flow, it is strongly influenced by marine dynamics. The erosion and accretion activities occur mainly in estuaries. The results above show trend of river development: i) Meandering channel is the most vulnerable to changes for morphology of channel by erosion and accretion of sediment and can create 1-2 horseshoe pools by the river change line; ii) Braided channel mainly changes in the bottom of channel by the formation of channel bar; iii) Straight channel mainly changes in the estuary (the mouth of the river can be moved, enlarged or narrowed).
DNA BARCODING APPLICATION OF MITOCHONDRIAL COI GENE TO IDENTIFY SOME FISH SPECIES OF FAMILY GOBIIDAE IN VIETNAM
Authors: Linh Nguyen Manh , Thu Pham The , Quan Nguyen Van , Chien Pham Van , Ly Dao Huong , Nhan Dinh Van , Len Dam Thi
Published: May 2019

The family Gobiidae is a relatively high abundance family of coastal fish with about 2000 species in 210 genera described. In Vietnam, the study on Gobiidae is very complex due to the large number of species, small size and high morphological variation which makes difficulties in identification and classification. In this study, the DNA barcoding technique has been used through mitochondrial cytochrome oxidase I (COI) gene to classify 30 specimens of Gobiidae from three coastal areas (North, Central and South) in Vietnam to evaluate the effectiveness compared to the morphological classification method. Results showed that 26 species belonging to 21 genera were determined by the COI barcode while 19 species (17 genera) were determined when using morphological method. Mahidolia mystacina was new recorded in Vietnam. The DNA barcodes of COI gene developed in this study could be useful for estimating phylogenetic diversity as well as other studies of gobiids in terms of conservation, management and utilization of fisheries resources in Vietnam. In addition, the results showed the high potentiality in using COI barcode to identify marine fish.
NUMERICAL STUDY ON THE ABNORMAL SURGE DUE TO ATMOSPHERIC PRESSURE VARIATION ON THE CENTRAL COAST OF VIETNAM
Authors: Thuy Nguyen Ba
Published: May 2019

In this study, the abnormal surge due to atmospheric pressure variation assumed to travel to the Central coast of Vietnam was simulated in some scenarios of maximum atmospheric variation (Pmax), the size (L) and the speed of the movement (Cp) of the atmospheric disturbance. The numerical model is based on two-dimensional long wave model considering the effect of atmospheric pressure variation on the sea level. The results showed that the surge height at the coastal area incresed as the size and maximum atmospheric variation of disturbance pressure increased. In which, when the traveling speed of atmospheric disturbance increased, the surge height increased, reaching to the maximum value of 0.72 m at Cp = 45 km/h, then decreasing. Meanwhile, the wave period decreased gradually to Cp = 30 km/h and was then almost unchanged. The coastal area around the latitude of 13oN was noted to have a higher surge level than both sides that may be due to the high steep of coastal topography. The results of the study are significant in investigation into the reason of abnormal surge in the area as well as serving the planning and disaster preparedness.
Twelve tips for teaching medical students about female genital mutilation (FGM)
Authors: Mayhew Jonathan , Gishen Faye , Kavanagh Jayne
Published: May 2019

This article was migrated. The article was marked as recommended. Background: Seeing women or girls from FGM practising communities can be a challenge for healthcare professionals, involving a complex interplay of professional duties, legal requirements, social and cultural understanding, and sensitive, skilled communication. Aims and methods: Robust training on how to identify and support women and girlswho have undergone or who are at risk of FGM, including fulfilling FGM-related legal duties,is essential for healthcare professionals. We believe it is important that this training begins in medical school so that junior doctors feel prepared to talk to women and girls from FGM practising communities as soon as they qualify and start work. Results: We have reviewed the limited existing literature on teaching medical and other healthcare students about FGM and have drawn on our many years of providing well-evaluated teaching sessions on FGM at UCL Medical School to design twelve tips as a blueprint for running sensitive and effective undergraduate teaching on FGM. Conclusions: Effective teaching for medical students on FGM is important and feasible. Curricula leads and individual teachers will benefit from a structured, comprehensive and culturally sensitive approach outlined in the twelve tips.
Dönemeçte Romanına Edebiyat Sosyolojisi Açısından Bir Bakış
Authors: ÇAKIR Dilek
Published: May 2019

Tarık Buğra’nın Dönemeçte romanı, edebiyat sosyolojisi bağlamında incelenmeye uygun metinlerdenbiridir. Eser, Tarık Buğra’nın çok partili hayata geçiş dönemini, bu dönemin getirdiği olumlu ve olumsuzdurumları, bu sürecin toplum ve aydınlar üzerindeki tesirini ve bakış açısını Doktor Şerif, Handan veOrhan arasındaki aşk üçgeninin arka plânında anlattığı bir dönem romanıdır. Romanda toplum ve aydınarasındaki çatışmadan Demokrat Parti’nin gelişim sürecine, Halk Partisi ve Millî Şef olarak nitelendirilenİsmet İnönü’ye, Demokrat Parti’nin kuruluşuyla bakışın nasıl değiştiğine, buğday fiyatlarının artmasıylabirlikte bir anda maddi refahı artan halkın parayı nasıl kullanacağını bilmeden savurmasına kadar dönemintoplumsal tarihine ışık tutan pek çok soruna değinilmiştir. Bu bakımdan eser, sosyolojik okumaya çokmüsaittir. Adeta dönemin toplumsal olaylarına değinen gizli bir hazine niteliği taşır.Bu çalışmada 1946 ve 1948 yılları arası çok partili hayata geçiş sürecindeki sorunlar, bu sürecin işleyişi,aydınlar ve halk üzerindeki tesirleri örnekler üzerinden anlatılmıştır. Demokrat Parti’nin oluşumunu yenitamamladığı bu süreçte politika, eğitim, kadın – erkek ilişkileri, aydın – halk kopukluğu gibi konulardakisosyolojik saptamalar ve bu eksende yaşanan aydın – toplum çatışması çalışmada geniş bir şekilde elealınmıştır.
İkinci Milletlerarası Çağdaş Türk Alfabeleri Sempozyumu 20-21 Kasım 2018’de İstanbul (Türkiye)’da Gerçekleşti.
Authors: DENİZ YILMAZ Özlem
Published: May 2019

Marmara Üniversitesi Türkiyat Araştırmaları Enstitüsü tarafından ilki 18-20 Kasım 1991tarihlerinde yapılan toplantının devamı niteliğinde olan “İkinci Milletlerarası Çağdaş TürkAlfabeleri Sempozyumu”, Marmara Üniversitesi Rektörlüğü Bilimsel Araştırma ProjeleriKoordinasyon Birimi, Atatürk Kültür, Dil ve Tarih Yüksek Kurumu Türk Dil Kurumu veSultanbeyli Belediyesi Başkanlığı desteğiyle 20-21 Kasım 2018 tarihleri arasında yurt içi ve yurtdışından birçok katılımcının iştirakiyle İstanbul’da düzenlendi.
Facebook Usage and Depressıon Levels of Selected Filipino College Students
Authors: Maglunog Grace Pauline , Dy Marison Felicidad
Published: May 2019

This study examined the relationship of sociodemographic characteristics and Facebook usage to the depression level of college students. A total of 347 respondents were purposively selected and completed a self-administered questionnaire. Results showed that: sex has a weak positive association with depression level (r=0.0962); age did not vary much across depression level; there is a moderate positive association between sexual orientation and depression level (r= 0.2794); socioeconomic status has an inverse relationship with depression level (r= -0.2126); and relationship status has a moderate positive association with depression level (r= 1.365). Further, there is a moderate positive association between the number of minutes spent on Facebook and depression level (r= 0.4229); there is a weak positive association between frequency of Facebook visits and depression level (r= 0.3052); and Facebook activities are positively correlated to depression. Young social media users are encouraged to use it moderately to avoid negative mental health outcomes.