bluuebunny/crossref_metadata_2025 huggingface dataset:
KOMPARASI HASIL PERENCANAAN RIGID PAVEMENT MENGGUNAKAN METODE AASHTO '93 DAN METODE Pd T-14-2003 PADA RUAS JALAN W. J. LALAMENTIK KOTA KUPANG
Authors: Dumin Lodofikus , Liem Ferdinan Nikson , Maridi Andreas S. S.
Published: November 2018

Selain perencanaan geometric jalan, perkerasan jalan merupakan bagian dari perencanaan jalan yang harus direncanakan secara efektif dan efisien, karena kebutuhan tingkat pelayanan jalan semakin tinggi. Jenis perkerasan jalan W.J. Lalamentik Kota Kupang adalah perkerasan lentur dengan jens lapis permukaan adalah HRS-WC, dimana jalan tersebut sering mengalami kerusakan berulang sebagai akibat dari beban lalulintas dan kondisi lingkungan. Perlu dicoba penggunaan perkerasan kaku untuk diketahui apakah perkerasan tahan sampai pada masa layannya. Terdapat banyak metode untuk mendesain tebal pelat beton ini, diantaranya menggunakan metode Pd T-14-2003 dan AASHTO 1993. Tulisan ini bertujuan untuk menganalisis alternatif desain tebal perkerasan mengkaji pada parameter perencanaan kedua metode, perencanaan tebal pelat beton, dan melakukan analisa perbandingan hasil kedua metode. Metode ini dimulai dengan pengumpulan data sekunder berupa data lalu lintas, data tanah dan data hidrologi, kemudian dilakukan perhitungan tebal pekerasan dengan menggunakan kedua metode, dan hasil perhitungannya dibandingkan. Parameter input perencanaan tebal perkerasan untuk metode Pd T-14-2003 adalah parameter lalu lintas, tanah dasar, pondasi bawah, pondasi bawah material berbutir, dan kekuatan beton. Parameter input perencanaan tebal perkerasan untuk metode AASHTO 1993 adalah parameter lalu lintas, modulus reaksi tanah dasar, material konstruksi perkerasan, realibility, dan koefisien drainase. Untuk studi kasus jalan W.J Lalamentik Kota kupang tebal pelat beton berdasarkan perhitungan metode Pd T-14-2003 adalah 16 cm, sedangkan berdasarkan metode AASHTO 1993 adalah 19 cm. Selisih yang didapat yaitu 3 cm dikarenakan perbedaan parameter input dari masing-masing metode.
Improving the level of environmental safety in the process of the ecoenergoefficient reconstruction of the housing stock in Kiev.
Authors: Kryvomaz Tetiana , Varavin Dmytro
Published: November 2018

As a result of research into the state of the housing stock in Kiev and the prospects for its reconstruction, the main levels of implementation of eco-energy-efficient measures have been identified, taking into account the increasing cost / effectiveness ratio, which will include problem assessment, optimizing energy costs, eco-energy efficient housing reconstruction, application of innovative technologies. Based on the national and international experience of reconstruction and overhaul, the 6E concept is proposed, which focuses on energy efficiency, environmental safety, economy, ecology, ergonomics and aesthetics of the reconstruction process.
Compliance with the basic requirements of eco-energy efficiency in the process of housing reconstruction will ensure the comfort of residents and will improve the level of environmental safety of our country. Introduction of the principles of energy efficiency in the process of reconstruction of housing stock is an integral part of Ukraine's environmental and national security, as it ensures a reduction in the negative impact on the environment and people, and also significantly reduces the waste of the construction industry.
Galvanocoagulation ecological sal method of current sewage treatment from ions of heavy metals.
Authors: Vasilenko Alexey , Vasilenko Lesya
Published: November 2018

It implemented a general description of the washing waste water in electroplating. The analysis of existing methods of cleaning the wash wastewater containing heavy metal ions. The comparative characteristic and disadvantages of these methods are given. The method proposed galvanocoagulation engineering calculation of industrial filter for wastewater treatment from heavy metal ions, in which the galvanocoagulation process.
PENGARUH FAKTOR RISIKO ERGONOMI TERHADAP KELUHAN NYERI PUNGGUNG BAWAH (LOW BACK PAIN) PADA KARYAWAN BUSHINDO TRAINING CENTER JAKARTA TIMUR
Authors: Aminoto Toto Aminoto , L. Abdurrahman Berbudi , L. Abdurrahman Berbudi
Published: November 2018

To meet the needs of his life then the man is required to work. In the workplace most of the time spent at work. Workplace environment has a risk to the health of people who work in the environment. In a working position that spent too much sitting can cause back pain, especially the bottom (Low back pain). This study aims to prove that the influence of Ergonomic Risk Factors can cause complaints of low back pain employee Bushindo Training Center East Jakarta. The sampling technique used is saturated sampling. The statistical analysis used is simple linear regression analysis. The results showed that ergonomic risk factors had a significant positive effect on the occurrence of low back pain. Ergonomic risk factors contribute to the possibility of lower back pain process by 63.5% the rest influenced by factors other than the variables performed in this study
PEMERIKSAAN KADAR HEMOGLOBIN SEBAGAI IDENTIFIKASI AWAL ANEMIA PADA KOMUNITAS VEGETARIAN DI WILAYAH JAKARTA BARAT
Authors: Chairlan Chairlan Chairlan , Mardiana Mardiana Mardiana , Djajaningrat Husjain Djajaningrat
Published: November 2018

Vegetarian vegans are at risk of anemia, it maybe because the food intake lacks the nutritional components necessery for hemoglobin formation. The aims of this study is to determine of hemoglobin (Hb) concentration in vegetarian as an indication of suffering of anemia. The study was conducted on 57 vegetarian vegan people which was eligible by inclusioncriterion. The independent variables in this study were gender, age, and duration of being vegetarian, while the dependent variable was hemoglobin concentration. Hemoglobin concentrations of each subject was measured by Cyanmethehemoglobinmethod. Bivariate analyzed was done bychi square test and by descriptively bycomparing Hb concentration with reference value. There are four people (7.0%)out of the 57 subjects studied who had Hb concentrations below the reference value, consisting of one male and three female. The male and female subjects between the ages 12-25 years had the best mean Hb concentrations compared to others aged groups. T test showed no corralation between Hb concentrations with gender, age, and duration of being vegetarian (P ≥ 0.05).That may be due to the good-vegetarian nutritional intake.The result also show that long being vegetarian does not cause low Hb concentration, and refuse the hypothesis that it will cause low Hb concentration.
BLADDER TRAINING BERPENGARUH TERHADAP PENURUNAN KEJADIAN INKONTINENSIA URINE PADA PASIEN POST OPERASI BPH DI RUANG RAWAT INAP RSUD SOREANG
Authors: Nurhasanah Teti Nurhasanah , Hamzah Ali Hamzah
Published: November 2018

The incidence of benign prostate hyperplasia (BPH) in Indonesia is quite high, which is about 24-30% of urological cases treated in several central public hospitals. While the incidence of BPH in general hospital Soreang in 2014 shows a fairly high incidence rate (12.5 %) and the second number of the top ten surgery cases after fibro adenoma mamma. Open prostatectomy is an invasive treatment to help miction of the BPH patients and it can cause side effects especially urinary incontinence. According to the result of preliminarystudy indicated that 80 % patients who control to Soreang general hospital after open prostatectomy surgery have urinary incontinence. One kind of nursing interventions that can be given to overcome urinary incontinence is by doing bladder training. This study aims to determine the effect of bladder training with use of delay urination and scheduled urination technique to decrease the incidence of urinary incontinence in post operative BPH patients. The research used quasi experiment, with used pre and post test approach in two intervention groups without using control group to 60 samples who obtained by accidental sampling, so the total number of each group is 30 BPH patiens. The results showed that bladder training with both delay urination and scheduled urination techniques had a significant effect on decreasing incidence of urinary incontinence in postoperative BPH patients, but there was no significant difference in the results of the two bladder training techniques on decreasing incidence of urinary incontinence. Related to this result, to prevent urinary incontinence of the post operative BPH patients is suggested to the nurse to apply bladder training with delay urination and scheduled urination techniques and in its application need to considered the age and physical condition of the patient.
Analisis Faktor-Faktor Yang Mempengaruhi Nilai Yang Dirasakan Untuk Menciptakan Kepuasan Mahasiswa
Authors: Maulana Hendri , . Indupurnahayu , . Masyhudzulhak
Published: November 2018

Penelitian ini menganalisis faktor-faktor yang mempengaruhi nilai yang dirasakan untuk menciptakan kepuasan mahasiswa di Fakultas Teknik Universitas Ibn Khaldun Bogor. Penelitian ini mengembangkan sebuah model penelitian. Responden dalam penelitian ini sebanyak 105 orang mahasiswa di Fakultas Teknik Universitas Ibn Khaldun Bogor.
Penelitian ini menggunakan Structural Equation Modeling (SEM) yang dijalankan melalui program AMOS 18 sebagai alat analisisnya. Hasil Analisis data menunjukkan bahwa model penelitian dan hasilnya dapat diterima. Hasil penelitian membuktikan bahwa citra merek (brand image) dan kualitas pelayanan mempunyai pengaruh positif dan signifikan terhadap nilai yang dirasakan. Implikasi manajerial dari penelitian ini adalah pihak manajemen fakultas perlu memberikan perhatian lebih untuk mengevaluasi dan meningkatkan kepuasan mahasiswa serta selalu mempromosikan jurusan-jurusan yang ada di Fakultas Teknik Universitas Ibn Khaldun Bogor.
Implementasi Konsep Balanced Scorecard (BSC) Berbasis Syari’ah Dalam Pengukuran Kinerja
Authors: Riswanto Anang Yudi , Indupurnahayu Indupurnahayu , Amin Akhmad Bakhtiar
Published: November 2018

The purpose of this research is to measure the performance of PT Mutiara Global Industry by using Sharia-based Balance Scorecard method. This research is quantitative research with descriptive approach. Performance measurement of PT Mutiara Global Industry from a financial perspective, customer perspective, intenal business process perspective and learning and growth perspective. The Shariah aspect in the financial perspective is the source of capital and the allocation of profit for zakat, infaq and alms. In the customer's perspective is how to keep the promise to the customer by always being sidik, tabligh, amanah and fathonah. In the internal process business perspective  is emphasized on itqan, working with perfect and complete quality and ihsan, always feeling watched by God. In the perspective of learning and growth is to control the charity of worship and study syar'i. Sampel from this research are employees and customers of PT Mutiara Global Industry

This research concludes that the performance of   PT Mutiara Global Industry is good category (score: 3,46875). The Accumulation results from financial perspective score 0.964, customer perspective score 0.9375, internal process perspective score: 1 and learning and growth perspective 0.6875 To improve the performance of PT Mutiara Global Industry is recommended for (1) improvement of ISO system implementation, (2) improvement of coaching and implementation of employee worship, (3) improvement of communication and service to customer (4). Improvement of  process and product quality, (5). Improvement of inventory management that will be impact on the on time  of production schedule.
EXPERIMENTAL STUDY OF SOLAR CHIMNEY PERFORMANCE FOR PASSIVE HEATING
Authors: Majeed Majid H , Resen Ibrahim S
Published: November 2018

An experimental investigation on solar chimney used for heating under climate of Iraqis carried out. Experiments were conducted on the chimney installed on vertical wall withabsorber plate placed at the front side of the air gap. The solar chimney attached to room ofdimensions (2.5×1.29×1.07) m. The chimney is studied to measure the effect of the air gapwidth with constant height of (1.07 m). Three widths are tested, namely, 0.2 m, 0.3 m and0.4 m. The experimental results showed that the solar chimney can achieve about (13 °C)difference in temperature between indoor and outdoor as well as it gives acceptabledifference in partial cloudy days. The results also indicated that the best performance ofsolar chimney is with 0.3m air gap width.
FAKTOR - FAKTOR YANG BERHUBUNGAN DENGAN KESIAPAN ANAK USIA BATITA (24 - 36 BULAN) DALAM MELAKUKAN TOILET TRAINING
Authors: Fatmawati Del
Published: November 2018

Toilet training pada anak merupakan suatu cara untuk melatih anak agar mampu mengontrol dalam melakukan buang air kecil dan buang air besar, serta buang air besar pada tempatnya. Sekitar 30% anak berumur 4 tahun, 10% anak berumur 6 tahun, 3% anak berumur 12 tahun dan 1% anak berumur 18 tahun masih buang air kecil tidak disengaja.  Penelitian ini bertujuan untuk mengetahui Faktor - Faktor Yang Berhubungan Dengan Kesiapan Anak Usia Batita (24 - 36 Bulan) Dalam Melakukan Toilet Training di PAUD Melati Perip Pepabri Jorong Giri Maju Pasaman Barat Tahun 2014. Jenis penelitian yang digunakan adalah deskriptif analitik dengan pendekatan cross sectional. Populasi yang digunakan adalah para ibu yang berjumlah 35 orang dengan sampel 35 orang dan menggunakan tehnik total sampling. Uji analisis yang digunakan adalah analisis univariat dan analisis bivariat menggunakan Chi Square atau Fisher’s Exact Test.Hasil penelitian didapatkan bahwa lebih dari separoh orang tua mempunyai pengetahuan yang tinggi tentang toilet training (74,3%), lebih dari separoh orang tua  mempunyai sikap positif tentang toilet training (54,3%), lebih dari separoh orang tua  (57,1%) mempunyai motivasi tinggi, Kesiapan toilet training lebih dari separoh sudah siap (65,7 %). Hasil uji statistic didapatkan hubungan bermakna pengetahuan orang tua (p=0,000 ; OR = 44), sikap orang tua (p=0,031;OR=6,8) dan motivasi orang tua (p=0,016;OR=8,5) dengan kesiapan batita dalam pelaksanaan toilet training di PAUD Melati Perip Pepabri Jorong Giri Maju Pasaman Barat Tahun 2014. Berdasarkan hasil penelitian dapat disimpulkan bahwa adanya pengaruh pengetahuan orang tua paling tinggi terhadap pelaksanan toilet training pada batita Disarankan kepada orang tua  dan guru sekolah untuk terus mengontrol dan memberikan motivasi  pada anak batita pelaksanaan toilet training agar anak terbiasa melakukan secara bertahap dan mandiri.

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Kata Kunci : Pengetahuan, Sikap, Motivasi, Toilet training
ANALYSIS OF IMPLEMENTATION CONTINUUM OF CARE PROGRAM TO INFANTS AND CHILD UNDER 5 YEARS HEALTH SERVICE
Authors: Utami Novi Zetri
Published: November 2018

Deaths of children under 5 years are caused by pneumonia, diarrhea, malaria, disease complications, premature, asphyxia, sepsis, accident, congenital abnormalities, and nutritional disorders. To reduce the number of such deaths, the WHO and other world organizations advocating for Continuum Of Care. The research by methods qualitative research, with a phenomenological approach. The study was conducted in the working area of the health department of Bukittinggi city, in September-October 2017. Informants election by purposive sampling. Data collection was conducted through interviews and processed and analyzed qualitatively. The results are known inputs such as policy refers to the vision and mission of the mayor, the amount of power is not sufficient, the availability of sufficient funds, the availability of sufficient infrastructure. Proces is implementation of the program should be increased. And output obtained, the Continuum Of Care program in the primary health center Bukittinggi 2016 has not been achieved, because the target is too high and the lack of participation of the community to visit health facilities as well as enhanced cooperation with the relevant sectors. It was concluded that Continuum Of Care program the primary health center has not reached Minimum Service Standard Bukittinggi City and is expected to improve the service even better.
kajian faktor penyebab kematian bayi di kota padang
Authors: Susanty Shantrya Dhelly
Published: November 2018

Kematian bayi adalah kematian yang terjadi antara saat setelah bayi lahir sampai bayi belum berusia tepat satu tahun(0-12 bulan). Jumlah kematian bayi  tahun 2014 di Kota Padang adalah 108 bayi, tahun 2015 kematian bayi sebanyak 96 bayi. Penelitian ini dengan metode mixed methods, dengan sequential explanatory design. Tujuan untuk mengetahui faktor-faktor penyebab kematian bayi(0-12 Bulan) di Kota Padang bulan Januari –Agustus tahun 2016. Sampel penelitian secara total populasi. Informan ibu yang mengalami kematian bayi dan kepala bidang KIA di Puskesmas. Analisis data digunakan analisis univariat, bivariat, multivariat  dan analisis kualitatif Hasil penelitian ini terdapat  hubungan status gizi ibu, usia kehamilan < 37 minggu, dan BBLR dengan penyebab kematian bayi. Sedangkan kualitas ANC tidak ada hubungan. Variabel paling berpengaruh BBLR. Hasil wawancara fasilitas kesehatan sudah lengkap, kegiatan dan program yang dilakukan belum optimal. Suami dan keluarga memberikan dukungan kehamilan dan persalinan.Kesimpulan terdapat  hubungan status gizi, usia kehamilan < 37 minggu, dan BBLR dengan penyebab kematian bayi. Variabel berpengaruh adalah BBLR. Hasil wawancara fasilitas kesehatan sudah lengkap , kegiatan dan program yang dilakukan belum optimal.Diharapkan kepada Puskesmas lebih menjalankan promosi kesehatan,  meningkatkan pelayanan, dan kegiatan  untuk menurunkan kematian bayi.

Kata kunci : bayi faktor ; kematian penyebab
Evaluating and Retrieving Parameters for Optimizing Organizational Structures in Real Estate and Construction Management
Authors: Eber Wolfgang , Zimmermann Josef
Published: November 2018

All organization is about creating structures. In particular, unique projects as are typical for Real Estate and Construction Management issues require a custom tailored organization due to the nonrecurring character. Moreover, as they are generally of large volume and traditionally tightly framed only an exactly fitting organization is capable to deal with the naturally given set of unknown parameters. Therefore, the term of Risk Management describes nothing more than an efficient organization where the treatment of varying parameters, i.e. risks, is well defined and prepared on an abstract level. Further abstraction of the question of an appropriate structure leads to principle considerations regarding the qualities of a structure, based on the fundament of Theory of Systems. Classical optimization methods are bound to fail here since they typically rest on the assumption of a given structure and are not flexible enough to create improved versions. However, parameterizing structures by the values of complexity, heterogeneity and recursiveness provide well-established assessment of the sensibility of organization structures regarding their stability, even against externally driven variations of internal variables. Thus, such parameters need to be retrieved from a given system and analyzed in order to allow judging the system's behavior in the long run as well as can be used for constructing add-ons to the structures in order to improve the efficiency of the organization. This focusses on encompassing characteristics like reducing complexity, increasing separability and stabilizing by the introduction of controlling elements. This paper is the revised version of the paper that has been published in the proceedings of the Creative Construction Conference 2018 (Zimmermann and Eber, 2018).
Dimensions of Dance with Reference to Song Lyrics: Improvisatory Processes and Practices in Indonesian MalayMenduTheatre Performance
Authors: Thomas Karen Kartomi
Published: November 2018

In this article, I analyse the creative process of dance in Malay mendu theatre staged in Indonesia's northern Riau Islands, based on fieldwork I conducted in 1984 and 2013. I describe and compare the four main motifs that made up most of the theatre's dances (referring specifically to upper body movements, the height of the forearms and hands, the direction of the eye gaze, the number of beats per movement), and deconstruct the five integrated, improvisatory mechanisms of the dance system (repetition, modification, retrogrades, looping, and controlled free-timing) by which actors generated their dances; thereby devising a choreology of Malay theatrical dance. Four performance parameters – motivic sequencing, improvisation, reflexive-cueing, and the dance-lyrics dynamic – were employed to guide and control these mechanisms. This case study aims to show how analysing a creative dance method benefits from an ethnographic research approach.1
Barriers to a software reminder system for risk assessment of stroke in atrial fibrillation: a process evaluation of a cluster randomised trial in general practice
Authors: Holt Tim A , Dalton Andrew RH , Kirkpatrick Susan , Hislop Jenny , Marshall Tom , Fay Matthew , Qureshi Nadeem , Lasserson Daniel S , Kearley Karen , Mollison Jill , Yu Ly-Mee , Fitzmaurice David , Hobbs FD Richard
Published: November 2018

Background

Oral anticoagulants reduce the risk of stroke in patients with atrial fibrillation (AF), but are underused. AURAS-AF (AUtomated Risk Assessment for Stroke in AF) is a software tool designed to identify eligible patients and promote discussions within consultations about initiating anticoagulants.

Aim

To investigate the implementation of the software in UK general practice.

Design and setting

Process evaluation involving 23 practices randomly allocated to use AURAS-AF during a cluster randomised trial.

Method

An initial invitation to discuss anticoagulation was followed by screen reminders appearing during consultations until a decision had been made. The reminders required responses, giving reasons for cases where an anticoagulant was not initiated. Qualitative interviews with clinicians and patients explored acceptability and usability.

Results

In a sample of 476 patients eligible for the invitation letter, only 159 (33.4%) were considered suitable for invitation by their GPs. Reasons given were frequently based on frailty, and risk of falls or haemorrhage. Of those invited, 35 (22%) started an anticoagulant (7.4% of those originally identified). A total of 1695 main-screen reminders occurred in 940 patients. In 883 instances, the decision was taken not to initiate and a range of reasons offered. Interviews with 15 patients and seven clinicians indicated that the intervention was acceptable, though the issue of disruptive screen reminders was raised.

Conclusion

Automated risk assessment for stroke in atrial fibrillation and prompting during consultations are feasible and generally acceptable, but did not overcome concerns about frailty and risk of haemorrhage as barriers to anticoagulant uptake.
Étude par diffraction des rayons X de la structure des ossements fossiles. II. Structure et âge du matériel osseux
Authors: Périnet Guy
Published: November 2018

Dans une première partie (1959,52, 31), nous avons étudié la mise au point de méthodes d'investigation spécialement adaptées à l'examen des ossements fossiles. Dans cette deuxième partie, nous appliquons ces méthodes aux ossements groupés d'après leur âge stratigraphique. Nous constatons que dans certaines conditions, il existe une corrélation entre la structure et l'âge d'un ossement.
Perfectionnements apportés à la platine théodolite
Authors: Bordet Pierre , Guitard Gérard
Published: November 2018

La platine théodolite présentée antérieurement à la Société a été complétée au moyen d'un dispositif de lumière convergente à grande ouverture (O. N. : 0,70) et d'un arc de cercle permettant la lecture des angles en coordonnées polaires. Ces dispositifs présentent de nombreux avantages.
Étude de la diffusion des rayons X par un monocristal de lithium. II. — Résultats
Authors: Champier Georges
Published: November 2018

On mesure l'intensité du flux de rayons X diffusé par un monocristal de lithium pour différentes orientations de ses axes cristallographiques. On évalue dans chaque cas les fréquences des ondes d'agitation thermique qui contribuent à la diffusion du premier ordre. On utilise, ensuite, les valeurs des cinq fréquences indépendantes des ondes pilotées par un vecteur d'onde fondamental de longueur maximum, et dirigé suivant un axe de symétrie, dans le calcul des cinq coefficients de force interatomiques introduits dans la première partie (Bull. soc. franç. Minér. Crist., .1959, 82, 61). On en déduit les valeurs des constantes élastiques dynamiques du lithium, soit en dynes par centimètre carré.

c11 = 1,00. 1011 c12 = 0,76. 1011 c44 = 0,70. 1011

Le spectre des fréquences est construit en considérant 17240 vecteurs d'onde régulièrement répartis dans la première zone de Brillouin. Le spectre obtenu est très différent d'un spectre du type de Debye ; il met en évidence une anisotropic très marquée des propriétés élastiques du lithium. La chaleur spécifique à volume constant que l'on déduit de ce spectre coïncide avec la valeur expérimentale.
Étude du Mondmilch de la grotte de la Clamouse et de quelques carbonates et hydrocarbonates alcalino-terreux
Authors: Baron G. , Caillère Simonne , Lagrange Raymonde , Pobeguin Thérèse
Published: November 2018

Après avoir rappelé la définition du terme de mondmilch, les auteurs indiquent les espèces minérales qui constituent en général ces concrétions : hydroma-gnésite, calcite et huntite. Ce minéral, carbonate double de formule (CO₃)₄CaMg₃ a été trouvé pour la première fois en France dans la grotte de la Clamouse (Hérault). Ses propriétés ont été comparées à celles de divers carbonates et hydrocarbonates alcalino-terreux, en utilisant l'analyse thermique différentielle, l'étude thermopondérale et les spectres infrarouges.
Libération éruptive de magma réanimé sous le microscope de chauffe
Authors: Barrabé Louis , Collomb Pierre , Deicha Georges
Published: November 2018

Description d'une expérience ayant permis de provoquer directement l'extrusion microvolcanique de la matière du reliquat vitreux réanimé au sein d'un phénocristal de quartz.
Les plagioclases synthétiques et le problème des hautes et basses températures
Authors: Sadran G.
Published: November 2018

L'étude des caractères optiques des plagioclases contenus dansdeuxpro-duits synthétiques révèle l'existence de formes «H. T. » dans l'échantillon à texture vitreuse et de formes «B. T. » dans le produit à texture grenue, bien que l'un et l'autre aient été obtenus dans les mêmes conditions de température. Ces premiers résultats, qui devraient être confirmés par de nouvelles expériences, s'accordent assez bien avec plusieurs faits d'observation classique et permettent de supposer que l'obtention de l'une ou l'autre forme de plagioclase tiendrait plus aux diverses conditions de cristallisation qu'à la température qui est généralement le seul critère retenu dans les interprétations pétrogénétiques .

La distinction entre une forme «désordonnée » et une forme «ordonnée », analogue à celle déjà établie pour les feldspaths alcalins, pourrait reposer sur les mêmes bases que la distinction entre formes de H. T. et formes de B. T., mais conduirait à des interprétations pétrogénétiques totalement différentes.
Observations sur le pouvoir rotatoire de divers cristaux uniaxes
Authors: Toupry N. , Mathieu Jean-Paul
Published: November 2018

Mise en évidence du pouvoir rotatoire cristallin du nitrite de baryum et du parathymol. Étude de la dispersion rotatoire de ces cristaux et de ceux du sulfate de lithium et de potassium, du benzile, de l'iridium III trioxalate de potassium. Essais sur le cyanure de potassium. Relations avec la structure.
Premier examen de la fraction argileuse de quelques sols du Chili
Authors: Donoso L.
Published: November 2018

Étude préparatoire à l'examen systématique des argiles des sols chiliens. Les trois échantillons faisant l'objet de cette note ont été prélevés sous des climats différents.

L'étude minéralogique met en évidence la différence des processus pédogénétiques en particulier la nature des argiles formées : illite et montmorillonite en climat sec et formation de pseudosables sous climat humide.
Étude pétrographique des pillows-lavas de la pointe Guilben, près de Paimpol (Côtes-du-Nord)
Authors: Alsac Claude
Published: November 2018

On trouve à la pointe Guilben, près de Paimpol en Bretagne, des pillows-lavas spilitiques interstratifiés dans un ensemble de projections volcaniques appartenant au précambrien. L'étude microscopique de cette lave montre qu'elle est essentiellement constituée de minéraux de basse température : albite B. T. (1), chlorite et épidote. Tous ces minéraux semblent primaires. Le mode de formation de cette spilite par épanchement sous-marin est examiné.
Appareil d'analyses thermiques pondérales et différentielles simultanées
Authors: Papailhau J.
Published: November 2018

Description d'un appareil permettant le tracé simultané des courbes d'analyse thermique pondérale, d'analyse thermique différentielle et de température de l'échantillon en fonction du temps, à partir d'une prise d'essai très faible, (3 dg au maximum) jusqu'à la température de 1 250° C. Les analyses peuvent être réalisées en atmosphère définie ou en courant gazeux contrôlé.

La balance enregistreuse est du type à équilibre constant obtenu en utilisant les variations de poussée d'un fluide sur une pièce solidaire d'un des plateaux. Les creusets, de forme particulière, sont interchangeables et peuvent être réalisés en matériaux divers, suivant la nature chimique de l'échantillon.

Quelques diagrammes, réalisés dans des conditions variées à partir d'échantillons de kaolinite, phosphate de manganèse, dolomie, sidérose et calcite, montrent les possibilités de l'appareil.
Estimation statistique de l'accord entre l'hypothèse et l'expérience au cours de la détermination d'une structure atomique. Signification physique. Critère de fin d'affinement
Authors: Rimsky Alexandre
Published: November 2018

Nous avons appliqué un traitement statistique sur l'ensemble des facteurs de structure observés et des facteurs de structure calculés, en utilisant les propriétés de corrélations linéaires de leurs modules. Nous donnons une interprétation physique de l'écart type σ (Fσ) de l'ensemble des modules des facteurs de structure observés.

En possession de ces éléments nous définissons un critère de fin d'affinement d'une structure, en comparant l'écart σ (Fσ) avec l'écart s (Fσ) sur l'ensemble des modules calculés.

Nous pouvons de la sorte définir une méthode d'élimination de l'erreur systématique sur l'observation.
La formation des «minéralisateurs » et des fluides juvénils
Authors: Laffitte Pierre
Published: November 2018

Les réactions de granitisation et de métamorphisme, de même que la cristallisation de magmas silicatés libèrent des minéralisateurs.

La transposition à des phénomènes géologiques de l'étude physico-chimique de cette libération indique que, dans le cas d'un système clos, il y a identité entre les phases fluides libérées par métamorphisme et par magmatisme rhéomorphique. Par contre, dans le cas de systèmes ouverts les phénomènes de distillation sélective et leurs modalités ne seront pas les mêmes dans les deux hypothèses.

Dans les filons hydrothermaux l'étude montre que les dépôts sont liés à des chutes de pression et certaines corrosions à des chutes de température. L'auteur insiste à nouveau sur l'importance fondamentale des variations de pression.
Un arséniate de calcium et de magnésium, isomorphe de la β rosélite
Authors: Bariand Pierre , Herpin Paulette
Published: November 2018

La découverte en 1955 d'un arséniate de calcium et de magnésium dans la mine de Talmessi près d'Anarak, Iran central permet de définir cette nouvelle espèce minérale comme un isomorphe de la β rosélite décrite par Frondel en 1954. Les paramètres identiques de ces deux minéraux sont donnés et leur formule précisée.
La dundasite de Gonnesa (Sardaigne)
Authors: Beaumont C. , Guillemin Claude
Published: November 2018

Une galerie de recherches, située à Gonnesa, dans le gisement de San Giovanni, Iglesias (Sardaigne), a fourni de nombreux spécimens de dundasite. L'étude de ce minéral a permis d'en préciser la formule :

Pb₂Al₄(CO₃)₄(OH)₈.3H₂O et de compléter ses propriétés. Des hypothèses sont émises sur les conditions de formation de la dundasite.
Réaction du granite fondu sous pression d'eau avec la calcite et une argile. Application au métamorphisme de contact
Authors: Wyart Jean , Ruppli C. , Sabatier Germain
Published: November 2018

Étude de la réaction de petits cylindres de CaCO₃ et d'argile immergés dans un magma granitique fondu à 800° C, sous une pression de 1 800 bars. Dans le le cas du calcaire la réaction consiste en une migration massive de silice du magma vers CaCO₃ qui est converti en wollastonite. Dans le cas de l'argile, qui, dans ces conditions de température et de pression se liquéfie avec formation de cristaux de spinelle, ce liquide et le magma tendent vers une composition chimique commune par diffusion du sodium et du potassium et dissolution d'une partie du spinelle ; mais une composition chimique uniforme ne s'établit pas dans tout le système par suite de la persistance de cristaux de spinelle résiduels dans la région initialement occupée par l'argile. On observe en fin d'expérience, et éventuellement à l'équilibre, la persistance côte à côte de deux systèmes de compositions chimiques très différentes, séparés par une frontière nette.
Karst et mines en France et en Europe : gîtes, grottes-mines et géotechnique
Authors: Nicod Jean
Published: November 2018

Bien des minerais ont été extraits dans des régions karstiques, de l'époque protohistorique à nos jours. Les minerais ont été piégés dans des paléokarsts suivant divers processus, encore discutés. Des minéraux métalliques ont pu être autrefois exploités dans des grottes-mines. De nombreux minerais polymétalliques en gîtes karstiques ont été extraits dans le SW de la Sardaigne, la Sierra de Carthagène (Espagne), la Montagne Noire, le Peak District (Angleterre), la Haute Silésie (Pologne), etc. Les anciennes mines de mercure d'Idrija (Slovénie) et l'exploitation récente de l'uranium dans le paléokarst de Tyuya Muyun (Kirghizie) sont des cas intéressants. L'utilisation des minerais de fer piso-litiques (sidérolithique, Bohnerz) à la base de la sidérurgie européenne, fait maintenant l'objet de nombreuses recherches ; l'interprétation des dépôts de sidérite pose un problème particulier. Les gisements de bauxite de type "méditerranéen" sont dans des poches et paléo-poljés karstiques. Les études sur les anciennes mines apportent une importante contribution à la connaissance des paléo-karsts. De plus les mines anciennes ou récentes ont créé des karsts artificiels, et posent de nombreux problèmes géotechniques et d'environnement. Mots-clés : gîtes métallifères, grotte-mine, métallurgie, minerais karstiques, paléo-géomorphologie, paléokarst.
Les "Forêts de Pierre" ou "Stone forests" de Lunan (Yunnan, Chine)
Authors: Ford Derek , Salomon Jean-Noël , Williams Paul
Published: November 2018

Les "forêts de pierre" sont bien connues en Chine occidentale. Nous décrivons les divers types observés dans le comté de Lunan sur le plateau du Yunnan vers 1 800 m d'altitude. Elles constituent une forme spectaculaire de lapiés comparables aux tsingy de Madagascar ou aux pinacles de Mulu. Au Yunnan, ces lapiés se développent dans les calcaires massifs et les dolomies du Permien et forment de hautes tours cannelées, beaucoup plus ruiniformes dans les dolomies. Ces tours peuvent atteindre 20-30 m de haut et plus rarement 40 m. Les "forêts de pierre" s'étendent par place sur des territoires de plusieurs kilomètres carrés au sein d'un karst polygonal ondulé présentant localement des reliefs de 150 m de haut. Trois phases d'évolution sont reconnues depuis le Permien : 1) karstification au Permien moyen, puis fossilisation par des basaltes continentaux au Permien supérieur,

2) érosion au Mésozoïque et re-karstifîcation, puis enfouissement sous d'épais dépôts continentaux éocènes, 3) exhumation à la fin du Tertiaire et au Quaternaire, puis re-karstification. Aucune autre "forêt de pierre" au monde ne présente une telle complexité d'évolution.
Molecular iodine-catalyzed one-pot multicomponent synthesis of 5-amino-4-(arylselanyl)-1H-pyrazoles
Authors: Pires Camila S , de Oliveira Daniela H , Pontel Maria R B , Kazmierczak Jean C , Cargnelutti Roberta , Alves Diego , Jacob Raquel G , Schumacher Ricardo F
Published: November 2018

A one-pot iodine-catalyzed multicomponent reaction has been developed for the selective preparation of 5-amino-4-(arylselanyl)-1H-pyrazoles from a diverse array of benzoylacetonitriles, arylhydrazines and diaryl diselenides. The reactions were conducted in MeCN as solvent at reflux temperature under air. The methodology presents a large functional group tolerance to electron-deficient, electron-rich, and bulky substituents and gave the expected products in good to excellent yields. The synthesized 1,3-diphenyl-4-(phenylselanyl)-1H-pyrazol-5-amine was submitted to an oxidative dehydrogenative coupling to produce a diazo compound confirmed by X-ray analysis.
THE CHANGES IN THE FOCUS OF SLOVAK ORGANISATIONS ON TALENT MANAGEMENT
Authors: Stacho Zdenko , Stachová Katarína , Papula Ján
Published: November 2018

Distinguishing an organisation from the competition, and building a position noticeably ahead of it entails the identification, attracting, education, development, and especially retaining of quality and talented employees. The objective of the article is to analyse the link between the region of operation of the organisation and its focus on the activities related to talent management, and to specify the overall change in the focus of organisations on talent management in time. Several partial objectives, such as a questionnaire survey conducted in Slovak organisations between 2013 – 2017, were fulfilled in order to accomplish this objective. Statistical hypothesis testing aimed at specifying the relationship between the region of operation of the given organisation and the execution of activities related to talent management in it, and the focus of the organisation on career planning of all the categories of employees, confirmed a link between the analysed variables. Positive changes in the selected attributes in time were evaluated by the fixed-base index.
Triboelectrification of KCl and ZnS Particles in Approximated Exoplanet Environments
Authors: Harper Joshua Méndez , Helling Christiane , Dufek Josef
Published: November 2018

When mobilized, granular materials become charged as grains undergo collisions and frictional interactions. On Earth, this process, known as triboelectrification, has been recognized in volcanic plumes and sandstorms. Yet, frictional charging almost certainly exists on other worlds, both in our own solar system (such as Mars, the Moon, and Venus) and exosolar planets. Indeed, observations suggest that numerous planets in the galaxy are enshrouded by optically thick clouds or hazes. Triboelectric charging within these clouds may contribute to global electric circuits of these worlds, providing mechanisms to generate lightning, drive chemical processes in the atmospheres, and, perhaps, influence habitability. In this work, we explore the frictional electrification of potassium chloride and zinc sulfide, two substances proposed to make up the clouds of giant exoplanets with >50× solar metallicities, including the widely studied super-Earth GJ 1214b, super-Earth HD 97658b, Neptune-sized GJ 436b, and hot-Jupiter WASP-31b. We find that both materials become readily electrified when mobilized, attaining charge densities similar to those found on volcanic ash particles. Thus, if these worlds do indeed host collections of mineral particles in their atmospheres, these clouds are likely electrified and may be capable of producing lightning or corona discharge.
Probing the Puzzle of Behind-the-limb γ-Ray Flares: Data-driven Simulations of Magnetic Connectivity and CME-driven Shock Evolution
Authors: Jin Meng , Petrosian Vahe , Liu Wei , Nitta Nariaki V. , Omodei Nicola , Costa Fatima Rubio da , Effenberger Frederic , Li Gang , Pesce-Rollins Melissa , Allafort Alice , Manchester Ward
Published: November 2018

Recent detections of high-energy γ-rays from behind-the-limb (BTL) solar flares by the Fermi Gamma-ray Space Telescope pose a puzzle and challenge on the particle acceleration and transport mechanisms. In such events, the γ-ray emission region is located away from the BTL flare site by up to tens of degrees in heliographic longitude. It is thus hypothesized that particles are accelerated at the shock driven by the coronal mass ejection (CME) and then travel from the shock downstream back to the front side of the Sun to produce the observed γ-rays. To test this scenario, we performed data-driven, global magnetohydrodynamics simulations of the CME associated with a well-observed BTL flare on 2014 September 1. We found that part of the CME-driven shock develops magnetic connectivity with the γ-ray emission region, facilitating transport of particles back to the Sun. Moreover, the observed increase in γ-ray flux is temporally correlated with (1) the increase of the shock compression ratio and (2) the presence of a quasi-perpendicular shock over the area that is magnetically connected to the γ-ray emitting region, both conditions favoring the diffusive shock acceleration (DSA) of particles. These results support the above hypothesis and can help resolve another puzzle, i.e., long-duration (up to 20 hr) γ-rays flares. We suggest that, in addition to DSA, stochastic acceleration by plasma turbulence may also play a role, especially in the shock downstream region and during the early stage when the shock Alfvén Mach number is small.
A Geometrical 1% Distance to the Short-period Binary Cepheid V1334 Cygni
Authors: Gallenne A. , Kervella P. , Evans N. R. , Proffitt C. R , Monnier J. D. , Mérand A. , Nelan E. , Winston E. , Pietrzyński G. , Schaefer G. , Gieren W. , Anderson R. I. , Borgniet S. , Kraus S. , Roettenbacher R. M. , Baron F. , Pilecki B. , Taormina M. , Graczyk D. , Mowlavi N. , Eyer L.
Published: November 2018

Cepheid stars play a considerable role as extragalactic distances indicators, thanks to the simple empirical relation between their pulsation period and their luminosity. They overlap with that of secondary distance indicators, such as Type Ia supernovae, whose distance scale is tied to Cepheid luminosities. However, the period–luminosity (P–L) relation still lacks a calibration to better than 5%. Using an original combination of interferometric astrometry with optical and ultraviolet spectroscopy, we measured the geometrical distance

pc of the 3.33 day period Cepheid V1334 Cyg with an unprecedented accuracy of ±1%, providing the most accurate distance for a Cepheid. Placing this star in the P–L diagram provides an independent test of existing P–L relations. We show that the secondary star has a significant impact on the integrated magnitude, particularly at visible wavelengths. Binarity in future high-precision calibrations of the P–L relations is not negligible, at least in the short-period regime. Subtracting the companion flux leaves V1334 Cyg in marginal agreement with existing photometric-based P–L relations, indicating either an overall calibration bias or a significant intrinsic dispersion at a few percent level. Our work also enabled us to determine the dynamical masses of both components,

(Cepheid) and

(companion), providing the most accurate masses for a Galactic binary Cepheid system.
Systematic Investigation of the Fallback Accretion-powered Model for Hydrogen-poor Superluminous Supernovae
Authors: Moriya Takashi J. , Nicholl Matt , Guillochon James
Published: November 2018

The energy liberated by fallback accretion has been suggested as a possible engine to power hydrogen-poor superluminous supernovae (SLSNe). We systematically investigate this model using the Bayesian light curve (LC) fitting code MOSFiT (Modular Open Source Fitter for Transients), fitting the LCs of 37 hydrogen-poor SLSNe assuming a fallback accretion central engine. We find that this model can yield good fits to their LCs, with a fit quality that rivals the popular magnetar engine models. Examining our derived parameters for the fallback model, we estimate the total energy requirements from the accretion disk to be 0.002–0.7

c
2. If we adopt a typical conversion efficiency ∼10−3, the required mass to accrete is thus 2–700

. Many SLSNe, therefore, require an unrealistic accretion mass, and so only a fraction of these events could be powered by fallback accretion unless the true efficiency is much greater than our fiducial value. The SLSNe that require the smallest amounts of fallback mass are still fallback accretion-powered supernova candidates, but they are difficult to distinguish solely by their LC properties.
The EBEX Balloon-borne Experiment—Optics, Receiver, and Polarimetry
Authors:   The EBEX Collaboration, Aboobaker Asad M. , Ade Peter , Araujo Derek , Aubin François , Baccigalupi Carlo , Bao Chaoyun , Chapman Daniel , Didier Joy , Dobbs Matt , Geach Christopher , Grainger Will , Hanany Shaul , Helson Kyle , Hillbrand Seth , Hubmayr Johannes , Jaffe Andrew , Johnson Bradley , Jones Terry , Klein Jeff , Korotkov Andrei , Lee Adrian , Levinson Lorne , Limon Michele , MacDermid Kevin , Matsumura Tomotake , Miller Amber D. , Milligan Michael , Raach Kate , Reichborn-Kjennerud Britt , Sagiv Ilan , Savini Giorgio , Spencer Locke , Tucker Carole , Tucker Gregory S. , Westbrook Benjamin , Young Karl , Zilic Kyle
Published: November 2018

The E and B Experiment (EBEX) was a long-duration balloon-borne cosmic microwave background (CMB) polarimeter that flew over Antarctica in 2012. We describe the experiment’s optical system, receiver, and polarimetric approach and report on their in-flight performance. EBEX had three frequency bands centered on 150, 250, and 410 GHz. To make efficient use of limited mass and space, we designed a 115 cm2 sr high-throughput optical system that had two ambient temperature mirrors and four antireflection-coated polyethylene lenses per focal plane. All frequency bands shared the same optical train. Polarimetry was achieved with a continuously rotating achromatic half-wave plate (AHWP) that was levitated with a superconducting magnetic bearing (SMB). This is the first use of an SMB in astrophysics. Rotation stability was 0.45% over a period of 10 hr, and angular position accuracy was 0.°01. The measured modulation efficiency was above 90% for all bands. To our knowledge the 109% fractional bandwidth of the AHWP was the broadest implemented to date. The receiver, composed of one lens and the AHWP at a temperature of 4 K, the polarizing grid and other lenses at 1 K, and the two focal planes at 0.25 K, performed according to specifications, giving focal plane temperature stability with a fluctuation power spectrum that had a 1/f knee at 2 mHz. EBEX was the first balloon-borne instrument to implement technologies characteristic of modern CMB polarimeters, including high-throughput optical systems, and large arrays of transition edge sensor bolometric detectors with multiplexed readouts.