bluuebunny/crossref_metadata_2025 huggingface dataset:
Early pregnancy reference intervals; 29 serum analytes from 4 to 12 weeks’ gestation in naturally conceived and uncomplicated pregnancies resulting in live births
Authors: Friis Petersen Jesper , Friis-Hansen Lennart J. , Jensen Andreas Kryger , Nyboe Andersen Anders , Løkkegaard Ellen C.L.
Published: July 2019

Background

Pregnancy introduces major physiological changes that also alter biochemical analytes. Maternal and perinatal health can be optimized by early intervention and therefore, pregnancy-specific reference intervals (RIs) for the local population are warranted. While the second and third trimester-specific changes are well described, the first trimester is less well characterized. We therefore wanted to facilitate early detection of abnormalities by generating first trimester reference values for 29 common analytes.

Methods

In a prospective early pregnancy (PEP) cohort (2016–2017), 203 pregnant women were recruited from 4 to 8 weeks’ gestation. Consecutive blood samples were drawn every 2 weeks until an ongoing second trimester pregnancy (n = 164) or a miscarriage (n = 39) occurred. After exclusion of women with complicated pregnancies or deliveries (n = 42), 122 women were included. The serum samples collected at <6, 6–8, 8–10, 10–12 and >12 weeks’ gestation were analyzed for 29 common analytes. Subsequently the RIs were calculated according to the International Federation of Clinical Chemistry and Laboratory Medicine (IFCC) recommendations (2.5–97.5th percentiles) and compared with the conventional RIs for non-pregnant women.

Results

Human chorionic gonadotropin (hCG), progesterone (P4), estradiol (E2), pregnancy-associated plasma protein A (PAPP-A), cancer antigen 125 (CA125), thyroid stimulating hormone (TSH), creatinine (CREA) and albumin (ALB) showed an early pregnancy-dependent change compared with conventional limits. For ALB the change was seen at 5.5 weeks’ gestation.

Conclusions

We report gestational age-specific RIs available from the early part of the first trimester applicable to everyday clinical care of pregnant women. Well-known alterations of RIs seen in later trimesters are also observed in the first.
Rubber toughened flame retardant (FR) polyamide 11 nanocomposites Part 2: synergy between multi-walled carbon nanotube (MWNT) and MMT nanoclay
Authors: Wu Hao , Ortiz Rogelio , Koo Joseph H.
Published: July 2019

In the previous study, flame retardant (FR) polyamide 11 (PA11) nanocomposites formulations designed for selective laser sintering (SLS)were prepared and characterized. The SEBS-g-MA elastomer successfully improved the material’s ductility. Although the nonhalogenated FR additives and montmorillonite (MMT) nanoclay successfully decreased the heat release capacity (HRC) and peak heat release rate (pHRR) as characterized by microscale combustion calorimeter (MCC). None of the rubber toughened formulations achieved UL 94 V0 rating, which is a bench mark for many FR polymer applications. As part two of this study, we explored the synergism between two nanoparticles, nanoclay and multi-walled carbon nanotubes (MWNTs), to see whether better FR properties can be achieved. TEM micrographs indicate that both nanoclay and MWNTs achieved high level of dispersion. Flammability results showed that all formulations achieved UL 94 V0 rating, which is a significant improvement from the previous formulations without MWNTs. Char morphology characterization indicated that a solid carbonaceous char layer was reinforced by nanoclay and MWNTs.
Improvement of the photoinduced birefringence in azopolymer PAZO doped with TiO2 nanoparticles via thermal treatment
Authors: Mateev Georgi , Nedelchev Lian , Georgiev Anton , Nazarova Dimana
Published: July 2019

We present a study of the photoinduced birefringence in nanocomposite films of the azopolymer PAZO (poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfon amido]-1,2-ethanediyl, sodium salt]) doped with TiO2 nanoparticles (NP) with different concentrations before and after thermal annealing. The NP represent nanopowder with primary particle size 21 nm. The concentration of the NP was varied from 0% (non-doped azopolymer film) to 5 wt%. The thermal process, applied to the nanocomposite films, includes 1 h heating at 200°C. Previous studies of PAZO show that the polymer is stable up to 270°C. We study the dependence of the maximal birefringence induced with He-Cd laser (λ= 442 nm) on the concentration of the TiO2 NP in the azopolymer thin films as well as thermal effect on the absorbance spectra of the thin films. As indicated by our results, the birefringence is higher for the thermally annealed samples. An increase of the photoinduced birefringence is also observed for the nanocomposite layers with 1% NP for the non-annealed films, and with 2% NP for the annealed films.
Low Field NMR Studies of Wheat Bread Enriched with Potato Juice During Staling
Authors: Kowalczewski Przemysław Łukasz , Walkowiak Katarzyna , Masewicz Łukasz , Baranowska Hanna Maria
Published: July 2019

Potato juice is a by-product in the production of starch from potato tubers. However, published studies indicate that it is a source of bioactive compounds with antioxidant and anti-inflammatory effects. The use of health-promoting additives may, however, affect the quality of the fresh final product as well as the stored one. Water behavior is one of the parameters whose analysis allows for the monitoring of the shelf life of products. Therefore, the research reported in this paper was aimed at investigating the effect of replacing wheat flour with spray-dried potato juice (SDPJ) at 2.5%, 5% and 7.5% on water behavior during bread staling. 1H Nuclear Magnetic Resonance (NMR) was used to analyze the impact of SDPJ on the dynamics of water in bread crumb. The NMR analyzes revealed that 7.5% addition of SDPJ resulted in an increased ratio of bound to bulk water (decreased T1 spin-lattice time) and decreased mobility of bulk water (decreased T22 spin-spin time). The enriched breads also showed different dynamics of water during storage, however, in each of the analyzed variants a slight increase in T1 was noted. It has also been shown that enrichment of bread in SDPJ accelerates the evacuation of water from the polymer network.
Computational simulation of mechanism and isotope effects on acetal heterolysis as a model for glycoside hydrolysis
Authors: Glancy John H. , Lee Daniel M. , Read Emily O. , Williams Ian H.
Published: July 2019

DFT calculations for the equilibrium isotope effect for deuterium substitution at the anomeric centre Cα in 2-(p-nitrophenoxy)tetrahydropyran with continuum solvation show significant variation in the range of relative permittivity 2 ≤ ε ≤ 10. One-dimensional scans of potential energy (with implicit solvation by water) or of free energy (from QM/MM potentials of mean force with explicit aqueous solvation with a hybrid AM1/OPLS method) for heterolysis of the bond between Cα and the nucleofuge do not show a transition state. A two-dimensional free-energy surface that considers also the distance between Cα and a nucleophilic water indicates a pre-association DN*ANint
‡ mechanism with a transition state involving nucleophilic attack upon an ion-pair intermediate, and this is supported by good agreement between the mean values of the calculated and experimental α-D KIEs. However, the magnitudes of the standard deviations about the mean values for the making and breaking C–O bonds suggest that the transition state is rather plastic, with Cα–Onu≈2 ± 0.4 Å and Cα–Olg≈3 ± 0.5 Å. Not only is nucleophilic solvent assistance necessary, but there is also evidence for electrophilic assistance through specific hydrogen bonding to the nucleofuge.
Magnetized fluidized bed with binary admixture of magnetizable and nonmagnetizable particles
Authors: Zhu Quanhong , Li Hongzhong , Huang Qingshan
Published: July 2019

Magnetic fields were used to successfully improve the fluidization quality of magnetizable particles, forming the magnetized fluidized bed (MFB). Moreover, researchers found that the binary admixture of magnetizable and nonmagnetizable particles could also be used in the MFB, creating the admixture MFB. Consequently, the MFB technique is no longer restricted to the few magnetizable particles in nature and can be extended to numerous nonmagnetizable particles. Nevertheless, research on the admixture of MFB is far from sufficient, severely hindering its commercial application in the chemical and biochemical industries. To deepen our understanding in this area, this review summarizes the relevant findings, which mainly include (1) transport phenomena in the gas-solid admixture MFB with Geldart B particles; (2) elimination of the abnormal fluidization phenomena in the gas-solid admixture MFB with Geldart C particles; (3) flow regime transition of the liquid-solid admixture MFB under both the magnetization-FIRST and magnetization-LAST operation modes; and (4) application of the pure MFB in the fields of gas filtration and coal dry separation. Finally, critical comments are made on the shortcomings of the reported research with the hope that more efforts could be devoted to these aspects in the future.
Uncertainty and Forecasts of U.S. Recessions
Authors: Pierdzioch Christian , Gupta Rangan
Published: July 2019

We estimate Boosted Regression Trees (BRT) on a sample of monthly data that extends back to 1889 to recover the predictive value of disaggregated news-based uncertainty indexes for U.S recessions. We control for widely-studied standard predictors and use out-of-sample metrics to assess forecast performance. We find that war-related uncertainty is among the top five predictors of recessions at three different forecast horizons (3, 6, and 12 months). The predictive value of war-related uncertainty has fallen in the second half of the 20th century. Uncertainty regarding the state of securities markets has gained in relative importance. The probability of a recession is a nonlinear function of war-related and securities-markets uncertainty. Receiver-operating-characteristic curves show that uncertainty improves out-of-sample forecast performance at the longer forecast horizons. A dynamic version of the BRT approach sheds light on the importance of various lags of government-related uncertainty for recession forecasting at the long forecast horizon.
Die Bedeutung von in bonis in der actio Serviana
Authors: Sirks Boudewijn
Published: July 2019

The meaning of in bonis in the actio Serviana. The dominant view in the literature on the Serviana (and Publiciana) regarding the meaning of the expression in bonis in the formula is that it refers to quiritary ownership or to possession which leads by way of usucapion to quiritary ownership (the so called bonitary ownership). Yet this view does not consider the fact that provincial land, of which there could only be a protected possession, could be pledged and seized by the pledgee with an action called the quasi Serviana or hypothecaria. Apparently this action applied to bona fide possession ex iusta causa, yet here also we find the expression in bonis for such possession. The conclusion is that in any case in the Serviana in bonis included also such bona fide possession which did not lead through usucapion to quiritary ownership.
Saturnina verkauft ihre Kinder
Authors: Isola Lisa
Published: July 2019

Saturnina sells her children. There is only one source on the sale of one's own freeborn children from classical times: a rescript of Caracalla in C. 7,16,1. Given the fact that the inquiry was most probably made by a woman – Saturnina –, it is unlikely that one can use this text for a study of the paternal ius vendendi in Roman law, as it has happened in the past. The following article will focus on the textual tradition, especially of the inscriptio, but will develop arguments regarding the content of this text as well.
„Urbanes” Mietrecht? Der römische Wohnungsmarkt zwischen Preismechanismus und Intervention
Authors: Willems Constantin
Published: July 2019

'Urban' tenancy law? The Roman rental market between price mechanism and intervention. Renting a flat in Roman times did not come cheap. The Roman jurists left the determination of the merces up to the parties to the locatio conductio and permitted them to circumvent each other in the course of the contract negotiations (se invicem circumscribere) – a rule that at first glance seems to privilege the landlord. In this paper, it is suggested that the system of sub-rent of insulae and the standardized Roman rental year, starting each year at the calends of July, contributed to a reduction in asymmetry of bargaining power between landlord and tenant. Only in exceptional cases there were external interventions in the price mechanism: In the perils of the civil war, Julius Caesar and Octavian issued laws remitting the annual rent below 500 sesterces for the inhabitants of Italy and below 2,000 sesterces for those of the city of Rome. In conclusion, these structures and rules show that in this regard, Roman tenancy law was specifically designed with a view to the inhabitants of the city of Rome and thus can be qualified as 'urban' law.
Subjektive Qualität ambulanter Pflege – Bewertungsrelevante Aspekte aus Sicht von Pflegebedürftigen und Pflegepersonen
Authors: Niens Christine , Hille Cornelius , Marggraf Rainer
Published: July 2019

In diesem Beitrag wird untersucht, welche Aspekte die Grundlage für die Bewertung der Qualität ambulanter Pflege aus Sicht von Pflegebedürftigen und Pflegepersonen bilden. Bislang wurde dies in der aktuellen Pflegeforschung und in Befragungen zur pflegerischen Versorgung vernachlässigt. Auf Grundlage von qualitativen Interviews mit Pflegebedürftigen und deren Pflegepersonen konnten verschiedene Kriterien herausgearbeitet werden, die für die subjektive Bewertung der Pflegequalität maßgeblich sind. Darauf aufbauend wird vorgeschlagen, diese Kriterien in zukünftige Untersuchungen oder Befragungen zur Qualität der ambulanten pflegerischen Versorgung zu integrieren.
Reading Women Participations on Populism Politics
Authors: Marwah Sofa
Published: July 2019

This paper aims to elaborate on women participation on politic populist development and expansion of support by the strength of women's groups as representatives of civil society. This study uses literature study methods to discover various data related to women's figures and women's group dedication in the context of civil society, sourced from journal and preliminary study results. The results of the study indicate that women participate in the practice of populism associated with men in cultivating the issues of populism and are received by the general public. Even women's contribution to society tends to be closer to welfare issues that are echoed in populist politics. When the populism politics need to expand in the context of the wider society, women are also present and have been there for a long time dedicating their lives on social welfare issues. The implication, it is necessary to see women contributions are as important as men in the practice of populist politics, not only at the level of the political elite but also in the life of the wide society. Women's groups are able to fill spaces that are not filled by the state, i.e. socio-economic spaces, wherever women are.
Using Quality Improvement to Implement a Standardized Approach to Neonatal Herpes Simplex Virus
Authors: Brower Laura H. , Wilson Paria M. , Murtagh Kurowski Eileen , Haslam David , Courter Joshua , Goyal Neera , Durling Michelle , Shah Samir S. , Schondelmeyer Amanda
Published: July 2019

OBJECTIVES:

Neonatal herpes simplex virus (HSV) infections are associated with high mortality and long-term morbidity. However, incidence is low and acyclovir, the treatment of choice, carries risk of toxicity. We aimed to increase the percentage of patients 0 to 60 days of age who are tested and treated for HSV in accordance with local guideline recommendations from 40% to 80%.

METHODS:

This quality improvement project took place at 1 freestanding children’s hospital. Multiple plan-do-study-act cycles were focused on interventions aimed at key drivers including provider buy-in, guideline availability, and accurate identification of high-risk patients. A run chart was used to track the effect of interventions on the percentage managed per guideline recommendations over time by using established rules for determining special cause. Pre- and postimplementation acyclovir use was compared by using a χ2 test. In HSV-positive cases, delayed acyclovir initiation, defined as >1 day from presentation, was tracked as a balancing measure.

RESULTS:

The median percentage of patients managed according to guideline recommendations increased from 40% to 80% within 8 months. Acyclovir use decreased from 26% to 7.9% (P < .001) in non–high-risk patients but did not change significantly in high-risk patients (73%–83%; P = .15). There were no cases of delayed acyclovir initiation in HSV-positive cases.

CONCLUSIONS:

Point-of-care availability of an evidence-based guideline and interventions targeted at provider engagement improved adherence to a new guideline for neonatal HSV management and decreased acyclovir use in non–high-risk infants. Further study is necessary to confirm the safety of these recommendations in other settings.
Serious Bacterial Infections in Neonates Presenting Afebrile With History of Fever
Authors: Ramgopal Sriram , Walker Lorne W. , Tavarez Melissa M. , Nowalk Andrew J. , Vitale Melissa A.
Published: July 2019

BACKGROUND:

Infants ≤28 days of age with fever are frequently hospitalized while undergoing infectious evaluation. We assessed differences in rates of serious bacterial infection (SBI; bacteremia, bacterial meningitis, urinary tract infection) and invasive bacterial infection (IBI; bacteremia, bacterial meningitis) among the following neonates: (1) febrile at presentation (FP), (2) afebrile with history of fever without subsequent fever during hospitalization, and (3) afebrile with history of fever with subsequent fever during hospitalization.

METHODS:

We performed a single-center retrospective study of neonates evaluated for SBI during emergency department evaluation between January 1, 2006, and December 31, 2017. Patients were categorized into FP, afebrile with no subsequent fever (ANF), and afebrile with subsequent fever (ASF) groups. We compared rates of SBI and IBI between groups using logistic regression and assessed time to fever development using time-to-event analysis.

RESULTS:

Of 931 neonates, 278 (29.9%) were in the ANF group, 93 (10.0%) were in the ASF group, and 560 (60.2%) were in the FP group. Odds of SBI in neonates ANF were 0.42 (95% confidence interval [CI] 0.23–0.79) compared with infants FP, although differences in IBI were not statistically significant (0.52, 95% CI 0.19–1.51). In infants ASF, median time to fever was 5.6 hours (interquartile range, 3.1–11.4). Infants ASF had higher odds of SBI compared to infants FP (odds ratio 1.93, 95% CI 1.07–3.50).

CONCLUSIONS:

Neonates with history of fever who remain afebrile during hospitalization may have lower odds for SBI and be candidates for early discharge after an observation period.
Influence of storage conditions on the quality of two varieties of native potato (Solanum Tuberosum group phureja)•
Authors: Valencia Flórez Luis Fernando , Trejo Escobar Diego Martín , Latorre Vásquez Laura Inés , Hurtado Benavides Andrés Mauricio , Mejía España Diego Fernando
Published: July 2019

Las variedades nativas presentan la oportunidad para recuperar la biodiversidad y contribuir a la seguridad alimentaria en algunas regiones de bajo desarrollo, sin embargo no han sido estudiadas lo suficiente. Se someten a diferentes temperaturas de almacenamiento las variedades de papa nativa Curiquinga y Ratona Morada cultivadas en el departamento de Nariño para observar el comportamiento de característicascomo humedad, pérdida de peso, contenido de glucosa y ácido ascórbico. La variedad Ratona Morada conserva mejor sus características en refrigeración, deteriorándose más rápido en incubación, la Curiquinga en cambio presenta mayor deterioro en refrigeración que en temperatura ambiente e incubación. Se recomienda profundizar los estudios de almacenamiento pos cosecha en variedades nativas para enlazar la producción con el procesamiento que permita generar cadenas agroindustriales de valor agregado, conservar estos recursos genéticos y brindar alternativas a pequeños productores.
Soma and Haoma: Ayahuasca analogues from the Late Bronze Age
Authors: Clark Matthew
Published: July 2019

In this article, the origins of the cult of the ritual drink known assoma/haomaare explored. Various shortcomings of the main botanical candidates that have so far been proposed for this so-called “nectar of immortality” are assessed. Attention is brought to a variety of plants identified assoma/haomain ancient Asian literature. Some of these plants are included in complex formulas and are sources of dimethyl tryptamine, monoamine oxidase inhibitors, and other psychedelic substances. It is suggested that through trial and error the same kinds of formulas that are used to make ayahuasca in South America were developed in antiquity in Central Asia and that the knowledge of the psychoactive properties of certain plants spreads through migrants from Central Asia to Persia and India. This article summarizes the main arguments for the botanical identity ofsoma/haoma, which is presented in my book,The Tawny One: Soma, Haoma and Ayahuasca(Muswell Hill Press, London/New York). However, in this article, all the topics dealt with in that publication, such as the possible ingredients of the potion used in Greek mystery rites, an extensive discussion of cannabis, or criteria that we might use to demarcate non-ordinary states of consciousness, have not been elaborated.
The Implementation of Islamic Education Management Information System in Religious Ministry Regional Office West Java Province
Authors: Abadi Dini Husni
Published: July 2019

EMIS (Education Management Information System) merupakan jawaban atas kebutuhan data dan informasi tentang lembaga-lembaga pendidikan Islam dan lembaga-lembaga lainnya dibawah Ditjen Pendidikan Islam, yakni kebutuhan untuk data dukung di DPR-RI , Bappenas, Kementerian Keuangan, dan lembaga pemerintah lainnya yang berkaitan dan berkepentingan untuk pembangunan dan pengembangan lembaga-lembaga pendidikan Islam di Indonesia, terutama untuk memberikan gambaran lebih jelas, tepat dan akurat serta dapat meyakinkan anggota DPR, Bappenas dan Kementerian serta lembaga-lembaga Pemerintah lainnya agar dapat membantu dan mengupayakan pengembangan dan pembangunan lembaga-lembaga pendidikan Islam, hingga dapat benar-benar sejajar dengan pendidikan umum, yang lebih dulu mendapat dukungan dari pemerintah.
PEMAKAIAN TEORI KEMASYARAKATAN IBN KHALDUN DALAM MEMPERKAYA KONSEPSI KURATOR MUSEUM ISLAM
Authors: Abdul Jalal Ahmad Farid , Abdul Rahim Rahimin Affandi
Published: July 2019

This article discusses the importance of museum curators for developing civilization. The magnitude of the concept of the museum curator can be derived from the theory of Ibn Khaldun. With literature review, this study found that the theory of Sociology-History theory proposed by Ibn Khaldun could be utilized for the profession of the museum's curator. It's not just about improving the curators in their day-to-day tasks, but also empowering them to make them more critical in handling issues. The application of Ibn Khaldun's theory may be an alternative to the rise of the Malay knowledge system as a nation that must have been excluded from colonialism, including in geopolitical and science (epistemology).
ISOLASI DAN IDENTIFIKASI KAPANG PADA PINDANG BANDENG (Chanos chanos) PRESTO
Authors: Siregar Resmi Rumenta
Published: July 2019

Ikan pindang adalah salah satu olahan yang sangat disukai oleh masyarakat Indonesia. Hal ini dapat dilihat dari produksi ikan pindang yang setiap tahunnya mengalami peningkatan. Sebagai contoh di Kabupaten Bogor, produksi ikan pindang pada tahun 2013 sebesar 3.643,56 ton, meningkat menjadi 10.334,44ton pada tahun 2015. Ikan pindang disisi lain, sangat mudah mengalami kemunduran mutu disebabkan masih tingginya kadar air, pengemasan yang tidak memenuhi standar serta proses pengolahan yang pada umumnya kurang menerapkan prinsip sanitasi yang baik. Penelitian ini bertujuan untuk mengisolasi dan mengidentifikasi kapang yang tumbuh pada bandeng presto. Sampel Bandeng presto diambil dari CV. Cindy Group. Kapang diisolasi dengan metode pengenceran bertingkat menggunakan media DRBC (Dichloran Rose Bengal Chloramphenicol Agar), kemudian diidentifikasi secara morfologi menggunakan media Malt Extract Agar dan Czapek’s Yeast Extract Agar. Nilai Aktivitas air (aw) bandeng presto memiliki kisaran rata-rata 0,96 – 0,97. Secara makroskopis terlihat adanya pertubuhan kapang pada permukaan ikan bandeng presto setelah penyimpanan selama 3 hari pada suhu ruang (20-250C). Sebanyak 5 isolat kapang diisolasi dari ikan pindang sampel bandeng presto. Hasil identifikasi secara mikroskopis diketahui bahwa kapang yang tumbuh ada ikan pindang tersebut adalah spesies Penicillium citrinum, Eurotium chevalieri, Fusarium solani, Fusarium sp, dan Cladosporium sp. Kadar aw ikan pindang resto yang masih tinggi (0,96-0,97) menyebabkan ikan pindang mengalami pembusukan yang diakibatkan oleh bakteri.
Yatay Çene Hareketlerinin EEG Üzerinde Oluşturduğu Yönelimsel Etkilerin Değerlendirilmesi
Authors: BAŞÇIL Muhammet Serdar
Published: July 2019

Amaç: Bu çalışma, SAM32RFO EEG cihazı ve 10/20 sistemine
sahip EEG kepi kullanılarak, 10 katılımcıdan belli bir düzen içerisinde
kayıtlanmış olan yatay çene hareketlerinin EEG sinyalleri üzerinde meydana
getirdiği yönelimsel etkilerin değerlendirilmesi amacıyla yapılmıştır.

Gereç-Yöntem: Çalışma 03/09/2018-03/10/2018 tarihleri arasında
üniversitemiz Elektrik-Elektronik Mühendisliği Bölümünde, 10 katılımcıdan (3
kadın, 7 erkek) EEG sinyallerinin kayıtlanarak bilgisayar ortamına aktarılması
ile tamamlanmıştır. Verilerin değerlendirilmesinde, standart sapma
değişimlerinden faydalanılarak olasılıksal sinir ağı modeli (PNN)
kullanılmıştır. Elde edilen sonuçlar yüzde olarak sunulmuştur.

Bulgular: 21-35 yaş aralığındaki sağlıklı katılımcıların, her
bir döngüsü 10 saniye süren ve bu süre boyunca (dudaklar kapalı, diş gıcırdatma
ve vücut hareketi olmaksızın) yaklaşık 20 kez sağa ya da 20 kez sola doğru çene
hareketleri yapabildiği görülmüştür. Yatay çene hareketleri sırasında kayıtlanan
uzun süreli ham EEG sinyallerinin, standart sapma değişkeni sayesinde tek bir
özellik olarak elde edilebildiği belirlenmiştir. Çıkarılan tüm özelliklerin
bilgisayar ortamındaki makine öğrenme algoritmaları yardımıyla incelenmesi
sonucunda, sağ ve sol çene hareketleri sırasında beyinde oluşan iki farklı EEG
sinyalinin, birbirlerinden %90,14 oranında farklı olarak belirlenebildiği
bulunmuş ve beyin haritalama üzerindeki çıkarımlarında bu oranı desteklemekte
olduğu anlaşılmıştır.

Sonuç: Çalışmanın sonucuna göre, engeli insanlara kendi
hayatlarını kolaylaştırabilen ve kimseye ihtiyaç duymadan bir bilgisayarı
kontrol etme, elektrikli sandalye ve sinirsel protez cihazlarını etkin
kullanılabilme gibi becerilerin kazandırılabileceği ve hatta onların rehabilite
olmalarının sağlanabileceği söylenebilir. Bu çıkarımların çene hareketler
yardımıyla daha kolay bir biçimde yapılabilir olduğunun gösterilmesi,
literatürde ilk kez çalışılmıştır.
Estimation of radon potential through measurement of uranium concentrations in granite geology
Authors: Bezuidenhout Jacques
Published: July 2019

The geology of an area can be used as a predictor for radon potential. Granite rock typically contains a high concentration of uranium and subsequent elevated emanation of radon gas. The geology of the western part of the Western Cape Province in South Africa is dominated by granite bedrock but very few studies on radon have been conducted in this area. Uranium concentrations were consequently measured on a large granite hill in the Saldanha Bay area of the Western Cape and a relationship between indoor radon and uranium concentrations was used to model radon potential on the outcrop. Results from granite rich environments in India were modelled in order to extract a relationship between indoor radon concentrations, radon exhalation rates and uranium concentrations. Radon exhalation rates greater than 0.35 Bq/m2h were predicted and estimated indoor radon concentrations in excess of 400 Bq/m3 were also predicted for the hill. The modelled results were compared with indoor radon measurements taken in the town of Paarl in the Western Cape, which sits on the same granite bedrock formation. The predicted radon potential correlated well with the physical measurements.
Significance:

Extensive in-situ uranium measurements were conducted by utilising a self-developed gamma-ray detection instrument (the GISPI) by means of a unique method.
Nuclear DNA purification from recalcitrant plant species for long-read sequencing v3
Authors: Jones Ashley , Borevitz Justin
Published: July 2019

Evolution has driven genetic diversity of life on Earth, but also created highly complex genomes that are difficult to sequence. Current draft genomes can have thousands to hundreds of thousands of contigs rather than chromosomes, containing incorrect assemblies, gaps and errors. With rapid advances in long-read technologies, it is becoming possible to resolve complex genomes, including repetitive, polyploid plant genomes. Despite the technology being available, a challenge persists: the extraction of pure high molecular weight DNA suitable for long-read sequencing. This is particularly true of recalcitrant native Australian trees such as Eucalypts and Acacias. To resolve this, firstly we optimised a density gradient based nuclei extraction to remove cytoplasmic secondary metabolites, phenols and limit reads from high copy count plastid genomes. Secondly, we optimised a gentle high-molecular weight DNA extraction free of columns and high centrifugation, to limit DNA fragmentation. Finally, DNA was purified and size selected by gel electrophoresis. For sequencing, we adopted the portable MinION sequencer from Oxford Nanopore Technologies. Using these approaches, we can approximately obtain over 10 gigabases of sequencing from a single MinION revC flow cell and over 15 gigabases with new revD flow cells, up to 23 gigabases. This includes quality reads over 200 kb in length, average N50 values over 20 kb and some N50 values exceeding 45 kb. Such ultra-long reads assist the assembly of high quality genomes, from telomere to telomere.
Bleaching a population of C. elegans nematode worm in a tube v2
Authors: Riccio Cristian
Published: July 2019

This is the C. elegans population bleaching protocol.
Estudo sobre satisfação acadêmica no curso de administração em uma instituição de ensino pública
Authors: Costa Dalieva Fernandes , Olivera Marcos Macri , Macri Luma Michelly Soares Rodrigues , Vieira Allan Sarmento , Silva Érika Lira Da
Published: July 2019

A construção de uma pesquisa de satisfação é importante para o desenvolvimento de um ensino de qualidade. A noção da concepção dos estudantes no que diz respeito à instituição de ensino que escolheram para seguir sua carreira acadêmica é suprimento essencial para a edificação de uma educação superior sólida. O objetivo deste estudo foi investigar os níveis de satisfação dos alunos do Curso de Administração do Centro de Ciências Jurídicas e Sociais da Universidade Federal de Campina Grande (CCJS/UFCG). Para a coleta de dados, foi aplicado, a 134 alunos do referido curso, um questionário composto por 31 questões sobre satisfação, envolvendo diversos aspectos relacionados à vida acadêmica dos estudantes, e cinco opções de satisfação distribuídas em uma escala de satisfeito a totalmente satisfeito. Entre os resultados obtidos, o maior índice de satisfação reside na segurança oferecida pela instituição, com 83%, e o maior índice de insatisfação, com 40%, na diversidade das atividades extracurriculares oferecidas. No geral, ficou evidenciado que a satisfação dos acadêmicos desse curso apresenta-se de forma positiva, com alguns pontos a serem aprimorados. Os resultados obtidos por este estudo podem ser úteis à instituição, no sentido de elaborar e implementar melhorias, além de potencializar condutas avaliadas positivamente.
Ingredientes pedagógicos para preparar futuros docentes de cocina
Authors: Cornejo Cabrera Doris Guadalupe , Molina Jaén María Dolores
Published: July 2019

Para esta investigación nuestro propósito ha sido investigar elementos del entorno estudiantil y docente para poder describir la realidad en cuanto a la aplicación de técnicas didácticas por parte del docente y poder identificar las circunstancias que rodean el desarrollo de aprendizajes relacionados al Turismo Cultural Gastronómico. Para ello, hemos diseñado dos instrumentos en escala Likert y después de validados por expertos y estudiantes, pudimos estructurarlos en apartados correspondientes con las dimensiones de la investigación. Las muestras de estudiantes elegidas aleatoriamente, porque todos estaban cursando asignaturas en el periodo de la investigación, y la muestra de docentes, se corresponde con el universo de la población. Una vez trabajados los resultados obtenidos por de alumnos, queda evidenciada la pertinencia de la técnica pedagógica para favorecer el aprendizaje en el alumnado de nuestro estudio. Concluimos que para la enseñanza de gastronomía, el eslabón que corresponde a la intervención del docente es crucial también en nuestro contexto y para ello se debe trabajar desde todos los ámbitos, formación, administración de centros, no es suficiente conocer una habilidad, sino que además hay que saberla transmitir
Spectrophotometrical researches of the subnuclear area of 46P/WIRTANEN comet
Authors: Ponomarenko V. , Chiuryumov K. , Sergeev O.
Published: July 2019

The observations and research of the short-period comet 46P/Wirtanen by optical spectra with an average resolution (λ/Δλ ≈ 1400) are presented. Spectra in January 2008 at the Peak Terskol mountain observatory with the Zeiss-2000 telescope (D = 2.0 m; F2 = 16 m) were obtained. On the basis of the received spectral material, the identification of emission bands was carried out. The distribution of the total energy flux, reflected energy flux and the spectrophotometric gradient in the spectral range λλ = 4850–7650 ÅÅ are constructed. The quality of the received spectral material allowed estimating with high accuracy the gas productivity of the molecules C2, NH2 and the relative dust productivity in cometary filters GC, RC. The relative dust productivity (Afρ), the gas productivity (Q) for the molecular emissions of C2 and NH2, as well as some other physical parameters of the neutral gas cometary atmosphere were evaluated. The resulting values of physical quantities are characteristic for Jupiter family comets. The gas productivity of 46P/Wirtanen during the observation period QC2 = 3.97–4.12 × 1025 mol/s, QNH2 = 2.06–2.97 × 1025 mol/s. The obtained values of gas and dust productivity characterize the cometary coma of 46P/Wirtanen as dust-rich. In comparison with the data of 1998, a significant decrease in production in the atmosphere of the comet of the NH2 molecule was recorded. The spectrophotometric gradient obtained for comet Wirtanen is characteristic for other JFC and is 8.6 % per 1000 Å. The relative dust productivity (Afρ) at the time of observations in January 2008 was significantly higher than in previous passages of perihelion. The obtained results may be the consequence of evolution of the upper layers of the cometary nucleus and require further experimental confirmation.
Acceleration and propagation of ultra high energy cosmic rays in the Local Universe
Authors: Voytsekhovsky V. , Hnatyk B. , Kudrya Yu.
Published: July 2019

Distribution of matter in the Local Universe (up to ~ 100 Mpc), especially in a Virgo Supercluster region (~20 Mpc) is strongly nonuniform and includes all elements of large scale structure: galaxies and their clusters, superclusters, filaments, sheets and voids. On its smallest scale, our Galaxy and its similar galaxy M31 (Andromeda Nebula) at a distance 770 kpc, together with dozens of dwarf galaxies, form the Local Group of Galaxies. Local group contained in Local Sheet – suchlike pancake concentration of galaxies with radius about 5 Mpc and thickness 1.5 Mpc. This structure is a part of Local Filament – cylindrical region with higher density of matter, that join us to more powerful filament, that concludes Virgo Supercluster and connects two highest matter concentrations in Local Universe – supercluster Great Attractor (70 Mpc) and Perseus-Pisces supercluster (60 Mpc). Extragalactic magnetic field (EGMF) distribution is expected to follow the baryonic matter density distribution. Ultra high energy cosmic rays (UHECRs, E>1018 eV) from extragalactic sources will undergo significant deviations in EGMF, which makes it difficult to search their sources. But for extremely high energy cosmic rays (EHECRs, E>5·1019 eV), that are on the top of cosmic rays energy spectrum (the biggest detected energy of cosmic rays is above 1020 eV), influence of EGMF can be negligible, and their arrival direction can correlate with source position. They carry an important information, about the physics of fundamental interactions beyond the standard model, but still unknown to their origins and mechanisms of acceleration. In addition, a flux of nuclear component of UHECRs decreases in result of nuclear photo-disintegration due to interaction with microwave and infrared background. These processes are significant for protons (hydrogen nuclei), for which the major losses are born of electron-positron pairs and photo-pions reactions. For multi nucleon nucleuses significant process of weakening is photo-disintegration with chemical composition change of main nuclei. In our work we estimate the influence of these factors on the propagation of the UHECRs from sources in the Local Universe, in particular we have investigated the mean free path and magnetic deflection of H(p), He, O, Si and Fe nuclei. For potential sources of UHECRs in the Local Universe, such as Virgo supercluster, Great Attractor and Perseus-Pisces supercluster, we have estimated types and energies of nuclei that can reach the Earth, and, in the same time, can save a connection of arrival directions with source position within 1 rad.
Meteors with multi-modal light curves: observations and qualitative models
Authors: Kozak P.
Published: July 2019

The problem of TV or video registration of meteors with anomalous light curves, in particular with multimodal and bimodal types is considered. The results of observations of two meteors from Perseid shower, obtained with the help of TV systems of super-isocon type are presented. The initial velocities of meteors were typical for Perseid shower meteors: 62.4 km/s and 58.4 km/s. One of the meteors has a light curve of a multimodal character, which can be explained by the fragmentation of the body. Another light curve has an evident bimodal type, which has no final explanation for the present. In opposite to most of registered for the moment meteors with bimodal light curves the given meteor from Perseid shower demonstrates the first peak of illumination to be much more intensive, and the second one to be significantly lower. The maximal brightness in the first peak was +2 magnitude, in the second one +3.5 magnitude, and in depression +4.5 magnitude which almost corresponds to the sky background, while the sensitivity of our observational instruments was +5.5 magnitude; but nevertheless the entire radiation disappearance was not happen. The qualitative models for interpretation of the meteor with bimodal light curve are proposed. One of them stipulates for different variants of realization of the 2-components composition of a meteoroid, when a body as the matter of fact consists of two particles. One of particles, inner as a rule, is high melting, for example a stone of iron; another one, the cover, is lower melting, for example a mix of dust and ice. Other types of the models use the cases of uniform monolith meteoroid of specific geometric shape. It is also intended that the meteoroid can rotate during its motion dependently on changing body shape or shifting its mass center. The proposed models are the simplest in accordance with the number of varying parameters, and can therefore pretend to their reality after successful application of quantitative analysis and according numerical modeling. It is noted that the final confirmation or abolishment of the model type will be possible after carrying out parallel spectral observations of meteors.
Danza de sombras en la pintura de Louis Soutter
Authors: Aguirre Martínez Guillermo
Published: July 2019

Resumen: Las pinturas realizadas por Louis Soutter cabe encuadrarlas tanto dentro del llamado arte de enfermos mentales, como del ‘art brut’. Lo más característico de estas pinturas concierne a su acusado expresionismo y al hecho de estar protagonizada por sombras. Indagaremos en el sentido precisamente de la sombra y lo pondremos en relación con su significación en el imaginario contemporáneo.
The Use of Stereographic Net for the Rapid Approximate Determination of Distance and Azimuth*
Authors: Willmore P. L.
Published: July 2019

The distance and azimuth from a seismograph station to earthquake epicentres anywhere in the world may be determined simply and rapidly by means of a stereographic chart bearing a suitable family of reference circles. Base charts designed for this purpose are obtainable from the Dominion Observatory, Ottawa.
Some Observations on the Attenuation of Seismic Waves
Authors: Willis D. E.
Published: July 2019

A number of quarry blasts were recorded on magnetic tape using low frequency seismometers. Spectral analyses were performed on these recordings using variable pass-band filters. Empirical equations involving geometrical spreading plus an appropriate absorption factor were found to fit observed attenuation. Examples are presented showing the effect of various parameters on the spectra of seismic waves generated by these blasts.
A Comparison of Estimates of Seismic Risk in the Central United States
Authors: Howell B. F.
Published: July 2019

Using the maximum likelihood method and a simple least-squares fit relating magnitude and the number of earthquakes per year in the central Mississippi Valley, Nuttli obtained equations which predict that the average recurrence period for a New Madrid-size earthquake is 810 and 980 years, respectively. Using different variants of Gumbel’s theory of extreme events, the average recurrence period is found to be 1100 years (Type I) to 215,000 years (Type III based on recent data only). Conventional methods, including Gumbel’s Type I theory, which make no allowance for an upper limit on the size of expectable earthquakes may overpredict the hazard from earthquakes which are larger than any which have occurred in the historic past.
Bounds on the Average Recurrence Interval of Major Earthquakes Along the Haiyuan Fault In North-Central China
Authors: Peizhen Zhang , Molnar Peter , Weigi Zhang , Qidong Deng , Yipeng Wang , Burchfiel B.C. , Fangmin Song , Royden L. , Decheng Jiao
Published: July 2019

Evidence of surface rupture has been found in trenches near Caiyuan and Shaomayin along the Haiyuan fault, where a great earthquake occurred in 1920. In addition to the 1920 earthquake, faulting occurred at least once between 2590 ± 190 years and 1525 ± 170 years B.P. in Caiyuan, and there probably was another event since 1525 ± 170 years B.P. The formation and later tilting of fault-related, scarp-derived colluvial wedges in the Shaomayin trench appear to record the occurrence of two pre-1920 events in the last 2200–3700 years, but there could have been three or more events. The average recurrence interval for great earthquakes along the Haiyuan fault probably exceeds 700 years, for the 1920 Haiyuan earthquake is the only major event to have been reported in this area in as many years of recorded history. Using a Holocene slip rate along this fault of 8 ± 2 mm/yr, and 8 m as the average amount of offset associated with past great events that have been determined by our previous studies, the resultant earthquake recurrence intervals would be from 800 to 1400 years. The results from our trenches and the historic record are consistent with this range.
Indication of active Faults in the New Madrid Seismic Zone from Precise Location of Hypocenters
Authors: Himes L. , Stauder W. , Herrmann R. B.
Published: July 2019

The hypocenter locations of the larger and better recorded earthquakes of the New Madrid seismic zone are examined in order to determine how closely the hypocenters lie along planar surfaces, thus relating the foci to active fault surfaces. For this purpose more than 500 earthquakes of the region have been selected for study, based on the number (7 or more) of observing stations used in the initial hypocenter location and on the quality of the P-wave onset. These events are relocated using a joint hypocenter-velocity-depth (JHVD) algorithm.

The relocated earthquakes are separated geographically into three trends: ARK, the southwest trending zone from Caruthersville, Missouri, to Marked Tree, Arkansas; DWM, the northeast trending zone from New Madrid to Charleston, Missouri; and CEN, the central, left-stepping offset zone from Ridgely, Tennessee, to New Madrid, Missouri. Vertical profiles taken along and across the ARK and DWM trends verify the strike and dip of dominantly strike slip motion on near vertical active faults along these trends. These results agree with previously determined composite focal mechanism solutions for these trends. No coherent picture has been obtained for the CEN trend.

As a by-product of the study, velocity models from the JHVD inversion are found to be reasonably uniform throughout the New Madrid seismic zone, and to offer supporting evidence for the presence of a shallow low velocity zone in the central portion of the Mississippi embayment.
Seismic Reflection Expression of Reactivated Structures in the New Madrid Rift Complex
Authors: Sexton John. L.
Published: July 2019

An important aspect of seismogenesis concerns the role of preexisting faults and other structural features as preferred zones of weakness in determining the pattern of strain accumulation and seismicity. Reactivation of zones of weakness by present day stress fields may be the cause of many intraplate earthquakes. To understand the relation between reactivated structures and seismicity, it is necessary to identify structures which are properly oriented with respect to the present-day stress field so that reactivation can occur.

The seismic reflection method is very useful for identifying and delineating structures, particularly in areas where the structures are buried as in the New Madrid seismic zone. Application of the seismic reflection method in widely separated locations within the New Madrid rift complex has resulted in successful detection and delineation of reactivated rift-related structures which are believed to be associated with earthquake activity.

The purpose of this paper is to discuss results from seismic reflection profiling in the New Madrid rift complex. Reflection data from several surveys including USGS Vibroseis* surveys in the Reelfoot rift area reveal reactivated faults and other deep rift-related structures which appear to be associated with seismicity. High-resolution explosive and Mini-Sosie** reflection surveys on Reelfoot scarp and through the town of Cottonwood Grove, Tennessee, clearly show reverse faults in Paleozoic and younger rocks which have been reactivated to offset younger rocks. A Vibroseis survey in the Wabash Valley area of the New Madrid rift complex provides direct evidence for a few hundred feet of post-Pennsylvanian age reactivation of large-offset normal faults in Precambrian-age basement rocks. Several earthquake epicenters have been located in the vicinity of these structures. In the Rough Creek graben, Vibroseis reflection data provide clear evidence for reactivation of basement faults.

The success of these reflection surveys shows that well-planned seismic reflection surveys must be included in any program seeking to determine the relationship between preexisting zones of weakness and seismicity of an area.