bluuebunny/crossref_metadata_2025_split huggingface dataset:
Natural and artificial OH defect incorporation into fluoride minerals at elevated temperature – a case study of sellaite, villiaumite and fluorite
Authors: Talla Dominik , Beran Anton , Škoda Radek 
Published: October 2022

Abstract
The long-known presence of a sharp OH absorption band in the tetragonal fluoride mineral sellaite, MgF2, inspired us to conduct a detailed study of the OH incorporation modes into this IR-transparent material as well as to search for hydrogen traces in two other IR-translucent halides – villiaumite (NaF) and fluorite (CaF2). Among these three phases, sellaite is the only one to incorporate ‘intrinsic’ OH groups, most commonly as O–H∙∙∙F defects oriented nearly perpendicular to the c-axis along the shortest edge of the constituent MgF6 polyhedra, in analogy with the isostructural mineral rutile, TiO2. Another defect type, seen only scarcely in untreated natural material, develops when subjecting sellaite to temperatures above 900°C. It involves an O–H∙∙∙O cluster along the 2.802 Å edge of the original MgF6 dipyramid, as fluorine atoms are progressively expelled from the structure, being replaced by O2- anions. This is corroborated by the appearance of spectral absorption features typical for brucite (Mg(OH)2) and ultimately periclase (MgO), the presence of which could be proven via powder diffraction of the heat-treated material. Except for a ‘dubious’ peak most probably caused by included phases, neither villiaumite (NaF) nor fluorite (CaF2) showed any presence of ‘intrinsic’ OH defects. They do however decompose along a similar route into the respective oxide and hydroxide phases at high temperature. This thermal decomposition of the studied halide phases is accompanied by the emission of gaseous (HF)n species at temperatures well below their established melting point - a subject which seems to be quite overlooked.
Contamination and risk assessment of heavy metals in stream sediments of Bambui area, Southern Cameroon
Authors: Yiika Lemnyuy Prosper , Jean-Lavenir Ndema Mbongué , Monespérance Mboudou Germain Marie , Mengu Emmanuel Eseya , Bih Bewah Emilien 
Published: October 2022

Abstract

The Bambui area is located southwestern part of the Pan-African fold belt in Cameroon, and it is found at the foot of Bamenda Mountains, which is part of the Cameroon Volcanic Line (CVL). The study area is made up of various rocks types such as alkali basalt, trachyte, rhyolite and ignimbrite with a granitic basement of the Pan Africa Fold belt. The main objective of this work was to assess the contamination and risk pose by heavy metals in stream sediments of Bambui area, southern Cameroon. Heavy metal contents in the representative stream sediment samples collected were determined using inductively coupled plasma-mass spectrometer (ICP-MS). The elevated content of Co, Cr, Cu, Mn, Ni, Pb, Th, V, Zn, La, Fe and Ti could be attributed to the geology of the area and anthropogenic metal input sources. The evaluation of contamination factor, degree of contamination, modified degree of contamination, enrichment factor, ecological risk factor and potential ecological risk index revealed that the sediments have low to high ecological risk index. Pollution load index (0.78-1.60), geo-accumulation load index (1.73-5641.91) and anthropogenic metal input (0-5.25) indicate heavy metal contamination of the study area. Geogenic origins, agricultural practices, municipal waste disposal into streams, biosolids and animal manure were identiﬁed as the major sources of heavy metals in stream sediments of the study area.
Optimal design of district metered areas based on improved particle swarm optimization method for water distribution systems
Authors: Yu Tingchao , Zhang Xiangqiu , Long Zhihong , Zhou Hua , Liu Xiaowei 
Published: October 2022

AbstractAlthough partitioning of water distribution systems (WDSs) into district metered areas (DMAs) is challenging, it can be effectively used for refined management and leakage control. A two-step novel process for DMA partitioning is proposed in this study, i.e. clustering and dividing. The first step is to cluster nodes through an improved METIS graph partitioning method. The second step is to optimize the location of flowmeters and gate valves on boundary pipes by obtaining the feasible solutions. The good solutions that constitute the Pareto front were produced, which could be a tough and time-consuming task. The paper proposes the innovative and efficient dividing phase: (a) selecting the important boundary pipes by hydraulic analysis; (b) using the improved particle swarm optimization algorithm; (c) proposing three objective functions. The proposed method is applied to Modena and EXNET networks to demonstrate its feasibility.
Selective Estrogen Receptor Modulators (SERMs)
Authors: Grese T. A. , Dodge J. A. 
Published: October 2022

Abstract:
Naturally occurring estrogens, such as 17 -estradiol and estrone, have traditionally been thought to play a central role in the development and maintenance of the female reproductive system and secondary sexual characteristics. In recent years, their beneficial effects on the skeleton, the cardiovascular system, and the central nervous system, as well as the cancer risks associated with long term exposure have also been recognized. The widespread use of " antiestrogens " such as tamoxifen for the prevention
and treatment of breast cancer has revealed that such compounds, while functioning as estrogen antagonists in mammary tissue, actually mimic the effects of estrogen in other tissues. The search for more selective agents has led to the development of raloxifene, a Selective Estrogen Receptor Modulator, which functions as an estrogen antagonist in the breast and uterus and as an estrogen agonist in the skeleton and cardiovascular system. Recent progress in the development of SERMs is the subject of this review, with an emphasis on structure activity _relationships and on their effects in non-traditional target tissues.	•
Triglyceride Level- and MTHFR-Specific Mediation Effect of Handgrip
Strength on the Association of Dietary Protein Intake and Cognitive Function
in the Chinese Elderly
Authors: Huang Ling , Liu Qian , Fu Jingzhu , Zhou Dezheng , Sun Yue , Duan Huilian , Yang Tong , Zhao Jing , Wang Zehao , Li Zhenshu , Dong Cuixia , Xu Ning , Ren Qinghan , Zhang Guoquan , Li Wen , Ma Fei , Yan Jing , Du Yue , Liu Huan , Sun Changqing , Wang Guangshun , Huang Guowei , Chen Yongjie 
Published: October 2022

Background:
Recent findings suggest that both dietary protein intake and hand grip strength
(HGS) were associated with cognitive function, however, few studies have been devoted specifically to
the mediation effect of HGS on the association of the dietary protein with cognitive function.

Objectives:
To confirm the hypothesis that HGS mediated the association of dietary protein intake with
cognitive function in the elderly, which was modified by triglyceride level and methylenetetrahydrofolate
reductase (MTHFR) gene status.

Methods:
This cross-sectional study included 3,268 participants. Dietary protein intake, HGS, and
cognitive function were collected by food frequency questionnaires (FFQ), grip measurements and
mini mental state examination (MMSE), respectively. In this mediation analysis, dietary protein intake
was entered as an independent variable, HGS was entered as a mediator, and cognitive function was
entered as a dependent variable.

Results:
HGS significantly mediated the associations of dietary protein (β = 0.0013, 95% CI: 0.0007,
0.0022), animal protein (β = 0.0024, 95% CI: 0.0012, 0.0037), and plant protein intake (β = 0.0011,
95% CI: 0.0001, 0.0023) with cognitive function in total participants, with the mediated proportion of
16.19%, 12.45% and 20.57%, respectively. Furthermore, significant mediation effects of HGS on the
associations of dietary protein, animal protein, and plant protein intake with MMSE score were found
in the elderly without hypertriglyceridemia or in MTHFR C677T CC/CT carriers.

Conclusion:
This study suggested that HGS mediated the association of dietary protein intake with
cognitive function, and this mediation effect was modified by triglyceride level and MTHFR C677T
gene status.
ИМПЛЕМЕНТАЦИЈА ФЛОРЕ У ПРОЦЕСУ АРХИТЕКТОНСКОГ ПРОЈЕКТОВАЊА ИНДУСТРИЈСКОГ ОБЈЕКТА
Authors: Шлегл Сандра 
Published: October 2022

Архитектонска студија се бави идејним решењем ботаничке баште и индустријског објекта за производњу парфема. Основно полазиште јесте испитивање односа архитектуре и природног окружења које је данас у великој мери запостављено, као и проналажење адекватног решења за имплементацију биљног материјала у самом процесу пројектовања.
Serpentinization Study On Ultramafic Rock at Morombo Area, Lasolo Islands District, North Konawe Regency, Southeast Sulawesi, Indonesia
Authors: Hasria  , Febiyanti  , Masri  , Okto Ali , Hasan Erzam S. , Hamimu La , Sawaludin  , Iradat Salihin La Ode Muhammad , Wahab  
Published: October 2022

The research is in Morombo area, North Konawe Regency, Southeast Sulawesi. The purpose of this study was to determine the characteristics of serpentinized ultramafic rock and serpentine paragenesis. Research was conducted using field observations and laboratory analysis consisting of petrographic and geochemical analysis in the form of X-Ray Fluorosence (XRF). Petrographic analysis was carried out to identify the mineral content and textures in the rock and to determine the percentage of serpentine mineral presence. Both of these rocks are petrographically dominated by primary minerals olivine and clinopyroxine and secondary minerals namely lizardite, chrysotile, antiorite and opaque minerals. The XRF analysis was to determine the elements of Ni, Fe, Co, MgO, SiO2, CaO, Al2O3 and P in ultramafic rocks. The results of petrographic analysis show that serpentinized ultramafic rocks in the study area consist of serpentinized dunite and serpentinized peridotite. The formation of clay minerals in rocks does not occur because of the low serpentinization process in the rock. The results of XRF analysis showed that all samples in the bedrock showed Ni content above 0.2%. This is caused by the enrichment of Ni which is interpreted as a result of the serpentinization process along with the formation of lizardite in the rock. The serpentinization sub-processes in the study area comprised by hydration, serpentine recrystallization, and deserpentinization. Serpentine paragenesis is formed from the mid-oceanic ridge ocean floor, the orogenic phase to weathering. Substitution of Mg by Ni in ultramafic rocks will produce Ni-Serpentin. It is estimated that in the research area lizardite and chrysotile lizardite and chrysotile are the causes of Ni enrichment in bedrocks. The serpentinization characteristics of ultramafic rocks in the study area show a low to moderate level of serpentinization.
Pelatihan Hygiene dan Sanitasi di Desa Bungaraya – Siak - Riau
Authors: Sembiring Vienna Artina 
Published: October 2022

Pelatihan dan penyuluhan Hygiene dan Sanitasi di desa Bungaraya kabupaten Siak adalah pengabdian masyarakat yang bertujuan agar masyarakat di desa Bunga Raya mengerti dan memahami tentang kebersihan diri, pemilihan bahan makanan yang baik, kebersihan dalam memproses atau mengolah makanan serta kebersihan dalam proses pengemasan makanan supaya makanan bisa awet/tidak basi dan terhindar dari bakteri dan kuman penyakit. Metode pelatihan yang digunakan adalah metode klasikal dengan pendekatan diskusi/tanya jawab dan praktik dengan maksud agar materi dapat diterima oleh peserta dengan baik. (1) Pengertian hygiene dan sanitasi diri, (2) hygiene dan sanitasi makanan, (3) hygiene dan sanitasi pengemasan makanan Hasil pelatihan menunjukan bahwa dengan adanya pelatihan ini para peserta mengerti dan memahami kebersihan diri, kebersihan peralatan dan tempat untuk mengolah makanan, pemilihan bahan makanan yang baik dan sehat untuk dimasak dan cara penyimpanan makanan yang baik dan benar.
ANALISA OPTIMALISASI WAKTU PROYEK DENGAN CARA CRASH PROGRAM PADA PROYEK RS HERMINA KUTABUMI, KOTA TANGERANG
Authors: Haq Saiful , Safitri Rully Angraeni , Prandiko Prandiko 
Published: October 2022

Proyek konstruksi merupakan suatu rangkaian kegiatan yang hanya satu kali dilaksanakan. Manajemen proyek adalah proses merencanakan, mengorganisir, memimpin, dan mengendalikan sumber daya perusahaan untuk mencapai sasaran jangka pendek yang telah ditentukan. Tujuan utama penelitian ini adalah untuk mengetahui jumlah waktu yang dapat dipercepat. Pada proyek Pembangunan Rumah Sakit Hermina Kotabumi dipilih sebagai tempat studi penelitian. Langkah langkah yang dilakukan adalah menyusun network planning (jaringan kerja) dengan metode Critical Path Method (CPM), menentukan jalur kritis dan melakukan percepatan dengan menggunakan cara crash program untuk mengoptimalkan waktu proyek. Hasil perhitungan menunjukkan waktu pelaksanaan normal proyek adalah 312 hari dengan cara crash program yaitu dengan menambah 1 jam penambahan jam kerja lembur maka proyek dapat dipercepat sebanyak 24 hari. Penambahan jam kerja sebaiknya dilakukan pada pekerjaan-pekerjaan kritis, apabila dilakukan pada semua, maka hanya akan menambah biaya saja sementara waktu yang dipercepat tetap.Kata Kunci : Network Plannning, Critical Path Method (CPM), Crash Program.
KAJIAN TERHADAP HUBUNGAN ANTARA PENGELOLAAN SISA MATERIAL DENGAN BIAYA DAN WAKTU PENYELESAIAN PROYEK KONSTRUKSI
Authors: Purwanto Sugeng , Rosyati Ria , Sudrajat Sudrajat 
Published: October 2022

Pada suatu proses pelaksanaan proyek konstruksi bangunan, tidak bisa dihindari adanya sisa material konstruksi atau biasa disebut dengan Construction Waste.Pada proyek konstruksi sisa material merupakan salah satu masalah yang pasti ada dan butuh perhatian khusus. Jenis sisa - sisa material yang ada di proyek konstruksi berdasarkan tiap kategori pekerjaan menghasilkan kuantitas sisa material yang berbeda, dan juga pengelolaan terhadap sisa material yang berbeda. Oleh sebab itu untuk mengetahui prosentase kuantitas sisa material dan untuk mengetahui sisa material apa saja pada proyek konstruksi, pengelolaan sisa material dan pengaruh pengelolaan sisa material terhadap biaya dan waktu penyelesaian proyek, harus dilakukan penelitian mengenai persepsi pelaku konstruksi pada proyek konstruksi. Metode pelaksanaan penelitian yaitu dengan tinjauan pustaka yang bersumber pada jurnal, buku dan media internet, sedangkan metode pengumpulan data dengan cara pengumpulan hasi] kuesioner yang ditujukan kepada pelaku konstruksi seperti Project Manager, Site Manager, Site Engineer, Supervisor, Pelaksana Lapangan dan Pengawas Lapangan. Data hasil kuisoner yang telahdianilisis disajikan dalam bentuk table dan grafik, sedangkan analisa data perhitungannya menggunakan prosentase, mean, SD, validitas, realiabilitas, dan korelasi untuk mengetahui adanya hubungan antara pengelolaan sisa material terhadap biaya dan waktu penyelesaian proyek kontruksi.Kata kunci: Sisa material, Pengelolaan sisa material, Hubungan, Waktu dan Biaya Penyelesaian Proyek kontruksi
PERENCANAAN RESERVOIR PENGENDALI BANJIR KOMPLEK SEKNEG KOTA TANGERANG
Authors: Alfandi Brian , Ali Mu’min Muahammad , Prasetya Wahyu Bagus 
Published: October 2022

Pertumbuhan pembangunan dan ekonomi yang pesat berpengaruh langsung terhadap lingkungan sekitar. Salah satunya pengaruh kurang baik pada kondisi lingkungan, timbulnya permasalahan seperti genangan air ataupun banjir menjadi contoh apabila kegiatan pembangunan yang dilakukan tidak memperhitungkan perkiraan debit air hujan, volume pembuangan air dan kebutuhan saluran yang dibutuhkan. Maka dari itu perencanaan pembangunan reservoir ini dilakukan, Perencanaan pembangunan reservoir di komplek Sekneg Kelurahan Panunggangan Utara sebagai salah satu badan penerima aliran air yang berlebih akibat air hujan pada saat musim hujan di Kota Tangerang khususnya sekitar Kelurahan Panunggangan Utara. Perencanaan reservoir itu sendiri diharapkan menjadi kerangka acuan dalam pembangunan, karena di dasari oleh identifikasi topografi, analisa hidrologi, analisa daya dukung tanah, dan lain lain sehingga pada akhirnya bisa di buat perencanaan untuk memudahkan pelaksanaan pembangunan.Kata kunci: reservoir, topografi, hidrologi, daya dukung tanah
PENGARUH PENAMBAHAN ADMIXTURE DAN ABU BATU TERHADAP ANALISA BETON PERCEPATAN 24 JAM PADA KOLOM AREA BASEMENT DENGAN MENGGUNAKAN SEMEN PCC
Authors: Almufid Almufid , Safitri Rully Angraeni , Arisanta Mici 
Published: October 2022

High Early Strength Self Compacting Concrete (HESSCC) merupakan varian beton yang memiliki tingkat workability yang tinggi sehingga tidak memerlukan pemadatan lagi dan juga memiliki kekuatan awal yang besar. Beton ini bisa digunakan untuk kolom area basement, karena bisa mempermudah pengerjaan pengecoran dan mempercepat pembangunan pada struktur. Pada penelitian ini ingin mengetahui pengaruh penambahan admixture (accelelator , superplasticizer) dan abu batu serta penggunaan semen PCC terhadap karakteristik HESSCC. Accelelator dicampurkan dengan kadar 0,35% dan superplasticizer 0,53%, sedangkan untuk abu batu dengan kadar 0%, 7%, dan 15%. Metode pengujian HESSCC dengan slump flow test pada kondisi segar. Selanjutnya pengetesan kuat tekan umur 12 jam, 24 jam dan 3 hari. Hasil penelitian, penambahan admixture dan abu batu dengan menggunakan semen PCC dapat menghasilkan beton HESSCC sesuai target rencana.Kata Kunci : High Early Strength Self Compacting Concrete (HESSCC), Admixture, Abu Batu, Semen PCC, Kolom Basement
Experiencia cirugía estereotáctica entre los años 2000 y 2020 en el Hospital Militar Central, Bogotá, Colombia
Authors: Duarte Mora Diana Paola , Palacino Domínguez Paula Valentina , Rojas Romero Luis Orlando 
Published: October 2022

RESUMEN
Introducción: La cirugía estereotáctica es una técnica quirúrgica con múltiples aplicaciones diagnósticas y terapéuticas que permite al neurocirujano realizar procedimientos más precisos y menos invasivos en comparación con la cirugía convencional, con el fin de evitar lesionar áreas funcionales.
Metodología: Se realizó un estudio descriptivo retrospectivo de corte transversal en el cual se revisaron las historias clínicas de los pacientes mayores de 18 años intervenidos quirúrgicamente por medio de cirugía estereotáxica entre enero de 2000 y diciembre de 2020 en el Hospital Militar Centra (Bogotá, Colombia)
Resultados: En el periodo de estudio comprendido entre enero del año 2000 y diciembre del año 2020 se encontraron un total de 119 pacientes intervenidos por medio de estereotaxia con objetivos diagnósticos y terapéuticos, de los cuales 44 son mujeres y 75 son hombres. La mayoría de los pacientes fueron llevados a resección y biopsia de tumores intracraneales. Se obtuvo una tasa de complicaciones del 4,2%.
Conclusiones: La cirugía estereotáctica es una técnica quirúrgica útil en el diagnóstico y tratamiento de diversas patologías que tiene buen rendimiento diagnóstico y baja tasa de complicaciones. En el presente estudio se presentan tasas de complicaciones similares a las reportadas en la literatura mundial siendo esta serie la única que analiza los resultados obtenidos con esta técnica quirúrgica en la población de las Fuerzas Militares de Colombia
Composite Functional Thermal Sprayed Coatings for Parabolic Antennas
Authors: Borisov Y. , Korzhyk V. , Kozjakov I. , Sviridova I. , Murashov A. , Borisova A. , Chub V. , Datzenko N. 
Published: October 2022

Abstract
This paper describes the development and evaluation of multifunctional coatings for outdoor parabolic antennas. The plasma-sprayed composite coatings provide corrosion protection, reduce solar heating, and improve the absorption of EM radiation at the edges of the antenna while impeding its flow in other areas. The coatings also reduce the impact of the support structure on antenna performance. Paper includes a German-language abstract.
Thermal Sprayed Coatings for Thixoforming Tools
Authors: Abdel-Samad A. , Rassoul S.A. , Fischer A. , Hornig T. , Lugscheider E. 
Published: October 2022

Abstract
The aim of this study is to investigate the development of thermally sprayed coatings for thixoforming dies and assess the effects of hot isostatic pressing on plasma sprayed coatings applied to TZM, stainless steel, and hot work steel substrates. As-deposited and compacted layers are analyzed with regard to their suitability for thermal, mechanical, and chemical protection. Paper includes a German-language abstract.
Influence of Additives on the Photocatalytic Properties of Plasma Sprayed TiO2 Coatings
Authors: Ohmori A. , Ye F.-X. , Li C.-J. 
Published: October 2022

Abstract
Titanium dioxide has promising photocatalytic properties that can be used in the treatment and purification of air and water. The aim of this study is to determine how process parameters and oxides added to generate anastasis affect the microstructure and surface properties of plasma sprayed TiO2. The photocatalytic effect of the layers and the influence of microstructure are investigated with the help of acetaldehyde degradation. The results show that the layers produced consist of anatase (3-15%) and rutile components. It has been proven that TiO2 is capable of decomposing acetaldehyde under UV radiation in proportion to the amount of anatase present. Paper includes a German-language abstract.
Extension of Service Life of Gas Turbine Blade by Ternary TBC Coating
Authors: Makida Y. , Tobe S. , Ando M. , Sonoya K. , Wakabayashi T. 
Published: October 2022

Abstract
Turbine entrance temperatures in the latest high-efficiency jet engines rise to more than 1773 K, which significantly raises the bar for thermal barrier coatings (TBCs). This paper describes a ternary coating system consisting of a vacuum plasma sprayed NiCrAlY bond coat, an atmospheric plasma sprayed ZrO2 top coat, and a MoSi2 middle coat. The middle layer inhibits oxidation of the nickel-chromium bond coat, thus extending the service life of the TBC system. Paper includes a German-language abstract.
Plasma-Sprayed Ti-6Al-4V Coatings in a Reactive Nitrogen Atmosphere up to 250 kPa
Authors: Guipont V. , Molins R. , Jeandin M. , Barbezat G. 
Published: October 2022

Abstract
Chemical reactions between melted materials and their gaseous environment are generally inherent to the thermal spray process. Measures to promote and control these reactions are the distinguishing characteristic of reactive plasma spraying. In this paper, Ti-6Al-4V nitrided coatings are produced by high-pressure reactive plasma spraying. The coatings are deposited at different pressures up to 250 kPa in a reactive nitrogen atmosphere as well as air in order to study the influence of spraying pressure and atmosphere. The microstructure and phase composition of the Ti-6Al-4V layers are examined with the aid of X-ray analysis, microprobe measurements, and electron imaging. The investigations show that the pressure-supported nitrogen application during spraying led to the formation of fine and coarse TiN in the Ti matrix. Paper includes a German-language abstract.
Laserstrahlbeschichten mit hoher Prozessgeschwindigkeit (Laser Beam Cladding at High Processing Speed)
Authors: Theiler C. , Seefeld T. , Sepold G. 
Published: October 2022

Abstract
Laser beam cladding is a versatile method for the deposition of functional surface layers, the generation of prototypes, and the repair welding of components. It is a thermal process characterized by a highly localized energy input. Powder-fed laser cladding is typically done with a CO2, Nd:YAG, or diode laser scanned at a speed of 0.3 to 1.5 m/min. The present work investigates the extent to which deposition speed and thermal efficiency can be increased. Using a Nd:YAG laser and high scan rates, functional layers a few tenths of a mm thick are obtained and larger surface areas are processed per unit of time. Paper text in German.