bluuebunny/crossref_metadata_2025_split huggingface dataset:
Understanding preservation and identification biases of ancient adhesives through experimentation
Authors: Kozowyk Paul R. B. , van Gijn Annelou L. , Langejans Geeske H. J. 
Published: August 2020

AbstractAdhesive production is one of the earliest forms of transformative technology, predating ceramics and metallurgy by over 150,000 years. The study of the adhesives used by Neandertals and early modern humans currently plays a significant role in debates about human technological and cognitive evolution. Depending on the type of adhesive used, different production sequences were required. These can vary in complexity and would have needed different knowledge, expertise, and resources to manufacture. However, our knowledge of this important technological development is severely hampered by poorly understood taphonomic processes, which affects the preservation and identification of adhesive materials and leads to a research bias. Here we present the results from a 3-year field preservation experiment. Flint flakes hafted and non-hafted with replica adhesives were left to weather naturally on and below the surface at two locations with different soils and climatic conditions. Differential preservation was recorded on a variety of natural adhesives by digitally measuring the surface area of each residue before and after the elapsed time. Residues were further assessed and photographed using metallographic optical microscopy. Results show that certain adhesives preserve to a significantly higher degree than others, while some materials may be more easily overlooked or visually misdiagnosed. We must therefore be aware of both taphonomic and identification biases when discussing ancient adhesive technology. This research provides a first look that will help us understand the disparities between which adhesives were used in the past and what we find in the archaeological record today.
Application of CMRI-ISM RMR for Stability Analysis of Development Workings for Ballarpur Underground Coal Mine - An Empirical and Numerical Approach
Authors: Paul Avinash , Kumar Niraj , Kumar Pramod , Singh Ashok Kumar 
Published: August 2020

Abstract
Roof bolt failures in the mine generally occur due to the poor identification of the weak rock layers and considered as a major concern for underground coal mines in terms of its productivity and safety. The triggering factor responsible for underground roof failure is the presence of weak bedding planes and various geological discontinuities. Geological disruptions present in the mine roof seriously affect the continuity of the rock layers resulting in block failure. However, numerous improved methods have been suggested by a number of researchers but still, the upholding of the accidents due to roof fall is considered as a major challenge for underground mine workings. Thus, it is necessary to give proper emphasis on characterization of the roof fall so that stability of the mine workings could be increased and movement of the weak and layered strata can be arrested by applying an adequate roof bolting system. This mechanism of roof support gives the composite binding between the rock layers by restricting the roof fall. The stability of mine workings can be also increased by proper application of rock mass classifications system and adequate design of support system and finally, by extensive simulation methods and statistical methods like FLAC 3D numerical and statistical modelling to ascertain the stability of the workings. CMRI-ISM RMR (Central Mining Research Institute – Indian School of Mines Rock Mass Rating System) classification system is the most popular and practiced method for roof support design in Indian coal mines which is being successfully used from last several years for roof support design in Indian geo-mining conditions. This forms the basis to estimate the rock load and support design. In this paper attempt has been made to assess the stability of workings and pillars below the railway track by using empirical and numerical approach. After both the studies it can be said that, the galleries and pillars underlying the railways track are stable, as factor of safety in each case is more than 2. Later on, the study was also extended to see the effects of subsidence on the surface which reveals that, there shall be no such effect on the surface due to underground workings as the value of NEW (non-effective width) is less than 0.4 for both the cases.
A Multi Criteria Approach for Morpho-tectonic Evaluation of Sai River Basin in Uttar Pradesh
Authors: Arya Ajay Kumar , Singh Ajay Pratap , Agarwal Kamal Kishore 
Published: August 2020

Abstract
The study integrates the morphometric analysis, lineament evaluation and fluvial geomorphology to investigate the morphotectonic setup of Sai basin. The Sai river basin forms an integral part of the central Ganga plain where the gentle slope is significantly controlled by intra-basinal tectonic activity. The fluvial setup of the Sai basin which comprises of vast old flood plains now is displayed as an entrenched river with straight channel symmetry with multiple sinuous bends. The structural control and geomorphic asymmetry can be well established by using multi criteria approach of morphometric parameters and lineament analysis. The morphometric analysis of the basin shows that the Sai river comprises of 5th order stream basin with high elongation ratio and high bifurcation ratio suggesting structural and tectonic controls. The form factor, drainage density, and length of overland flow shows low permeability with low infiltration rate indicating sheet erosion as a major denudational process. The lineament analysis from the stream pattern analysis indicates structural control for drainages while geomorphology corresponds to the landscape of the basin. The lineaments analysis shows a major NW-SE trend in concordance to present foreland basin. Thus, the study confirms that the Sai basin has conclusive evidences of morpho-tectonic control in the central Ganga plain indicating the role of the tectonics in basin evoluation.
Curative gene therapies for rare diseases
Authors: Maldonado Rocio , Jalil Sami , Wartiovaara Kirmo 
Published: August 2020

AbstractDiseases caused by alterations in the DNA can be overcome by providing the cells or tissues with a functional copy of the mutated gene. The most common form of gene therapy implies adding an extra genetic unit into the cell. However, new genome engineering techniques also allow the modification or correction of the existing allele, providing new possibilities, especially for dominant diseases. Gene therapies have been tested for 30 years in thousands of clinical trials, but presently, we have only three authorised gene therapy products for the treatment of inherited diseases in European Union. Here, we describe the gene therapy alternatives already on the market in the European Union and expand the scope to some clinical trials. Additionally, we discuss the ethical and regulatory issues raised by the development of these new kinds of therapies.
Orthorexic eating behavior and body dissatisfaction in a sample of young females
Authors: Barthels Friederike , Kisser Julia , Pietrowsky Reinhard 
Published: August 2020

Abstract
Purpose
To analyze body dissatisfaction in relation to orthorexic eating behavior in a sample of young females to further investigate characteristic features of orthorexic eating behavior and its association with other eating disorders.

Methods
N = 197 young females (age: M = 29.59, SD = 10.85 years) completed an online survey with the following questionnaires: the Düsseldorf Orthorexia Scale to measure orthorexic eating behavior, the Eating Disorder Inventory-2 (EDI-2), measuring psychopathological aspects of disordered eating behavior, the Dresden Body Image Questionnaire (DKB-35) to measure five components of body image, and the Body Shape Questionnaire (BSQ), measuring body dissatisfaction.

Results
In the total sample, Pearson correlations revealed that orthorexic eating behavior was positively associated with drive for thinness and body dissatisfaction. An independent samples t-Test revealed that females with elevated levels of orthorexic eating behavior (n = 35) displayed higher levels of drive for thinness and body dissatisfaction and lower levels of self-acceptance in comparison to a randomized sample from the remaining females with low levels of orthorexic eating behavior (n = 35). According to a multiple regression analysis, drive for thinness and body dissatisfaction measured by the BSQ served as positive predictors for orthorexic eating behavior, whereas bulimia and body dissatisfaction measured by the EDI-2 served as negative predictors.

Conclusions
Results reveal that orthorexic eating behavior is more closely related to psychopathological aspects of other eating disorders than previously assumed. Body dissatisfaction as another major feature of orthorexia nervosa should be taken into account in future studies.

Level of evidence
III, case–control analytic study.
Controllable synthesis of different morphologies of CuO nanostructures for tribological evaluation as water-based lubricant additives
Authors: Zhao Junhua , Yang Guangbin , Zhang Yujuan , Zhang Shengmao , Zhang Chunli , Gao Chuanping , Zhang Pingyu 
Published: August 2020

AbstractIn this study, water soluble CuO nanostructures having nanobelt, nanorod, or spindle morphologies were synthesized using aqueous solutions of Cu(NO3)2·3H2O and NaOH by adjusting the type of surface modifier and reaction temperature. The effect of morphologies of these various CuO nanostructures as water-based lubricant additives on tribological properties was evaluated on a UMT-2 micro-friction tester, and the mechanisms underlying these properties are discussed. The three different morphologies of CuO nanostructures exhibited excellent friction-reducing and anti-wear properties. Tribological mechanisms differed in the initial stage of frictional interactions, but in the stable stage, a tribochemical reaction film and adsorbed lubricious film on the rubbing surfaces played important roles in hindering direct contact between friction pairs, leading to improved tribological properties.
A finite element analysis (FEA) approach to simulate the coefficient of friction of a brake system starting from material friction characterization
Authors: Riva Gabriele , Varriale Francesco , Wahlström Jens 
Published: August 2020

AbstractThe coefficient of friction (COF) is one of the most important parameters to evaluate the performance of a brake system. To design proper brake systems, it is important to know the COF when estimating the brake force and resulting torque. It is challenging to simulate the COF since friction in disc brakes is a complex phenomenon that depends on several parameters such as sliding velocity, contact pressure, materials, and temperatures, etc. There is a lack of studies found in the literature focusing on simulation of the COF for a full brake system based on tribometer material characterization. The aim of this work is therefore to investigate the possibility to use a finite element analysis (FEA) approach combined with a COFpv-map to compute the global COF of a disc brake system. The local COF is determined from apv-map for each local sliding velocity and contact pressure determined by the FEA. Knowing the local COF, the braking force of the entire brake system and the global COF can be evaluated. Results obtained by the simulation are compared with dyno bench test of the same brake system to investigate the validity of the simulation approach. Results show that the simulation is perfectly in line with the experimental measurements in terms of in-stop COF development, but slightly higher with a positive offset for every braking.
Statistical Analysis of Anode Efficiency in Electrochemical Treatment of Wastewater and Sludge
Authors: Rumky Jannatul , Tang Walter Z. , Sillanpää Mika 
Published: August 2020

AbstractElectrochemical processes have proven their potential as effective technologies to treat wastewater from industrial, urban and agricultural activities, and thus, contribute towards a cleaner environment. In this study, we aimed to assess the effectiveness of the leading electrochemical technologies, such as electro-oxidation, electrochemical coagulation and electrochemical advanced oxidation processes (EAOPs), statistically for different types of anodes for the removal of various pollutants from wastewater along with their treatment efficiency. Anode is considered as a source of electron and an essential part of electrochemical processes. So, we have evaluated the relationship between different anode features such as anodic material, surface area versus removal of chemical oxygen demand (COD), dissolved organic carbon (DOC) and colour in various wastewater treatment plants (WWTPs) by IBM SPSS Statistics 26. Apart from that, various process characteristics such as inter-electrode distance, system pH, reactor volume, current density and voltage were also considered in this investigation. From the regression analysis of the electrochemical coagulation system, it was found that the removal efficiency of pollutants is enhanced by the surface area of the electrodes along with the inter-electrode distance. Regarding electro-oxidation, it was seen that COD and colour removal are both dependent on the reaction time of the system, while the DOC removal rate of different EAOPs was strongly related to the reactor volume. Furthermore, the uncertainty of the regression analysis on pollutant removal efficiency prediction was assessed. Finally, sensitivity analysis was done by Monte-Carlo method to check modest changes from input variables.
Fabrication of Waterproof Artificial Compound Eyes with Variable Field of View Based on the Bioinspiration from Natural Hierarchical Micro–Nanostructures
Authors: Zhou Peilin , Yu Haibo , Zhong Ya , Zou Wuhao , Wang Zhidong , Liu Lianqing 
Published: August 2020

AbstractPlanar and curved microlens arrays (MLAs) are the key components of miniaturized microoptical systems. In order to meet the requirements for advanced and multipurpose applications in microoptical field, a simple manufacturing method is urgently required for fabricating MLAs with unique properties, such as waterproofness and variable field-of-view (FOV) imaging. Such properties are beneficial for the production of advanced artificial compound eyes for the significant applications in complex microcavity environments with high humidity, for instance, miniature medical endoscopy. However, the simple and effective fabrication of advanced artificial compound eyes still presents significant challenges. In this paper, bioinspired by the natural superhydrophobic surface of lotus leaf, we propose a novel method for the fabrication of waterproof artificial compound eyes. Electrohydrodynamic jet printing was used to fabricate hierarchical MLAs and nanolens arrays (NLAs) on polydimethylsiloxane film. The flexible film of MLAs hybridized with NLAs exhibited excellent superhydrophobic property with a water contact angle of 158°. The MLAs film was deformed using a microfluidics chip to create artificial compound eyes with variable FOV, which ranged from 0° to 160°.
Examining the link between economic strain and adolescent social behavior: Roles of social bonds and empathy
Authors: Jiang Shan , Dong Lei , Jiang Chaoxin 
Published: August 2020

ABSTRACTIntroductionThe detrimental effect of economic strain on adolescent behavioral development is well established, but the mechanisms explaining this relationship are less known. This study aims to explore the psychosocial factors operating as pathways connecting economic strain to adolescent antisocial and prosocial behaviors, and examine whether these effects differ by gender.MethodsThe sample includes 1280 adolescents from middle and high schools in Hebei province, China (Mean age = 15.68 years; 52.6% girls), collected by a multi‐stage cluster random sampling. Multi‐group structural equation modeling is adopted for data analysis.ResultsSocial bonds partially mediate the relationship between economic strain and adolescent antisocial behavior, and empathy fully mediates the relationship between economic strain and prosocial behavior after controlling for gender, age, household registration, and subjective socioeconomic status. In terms of gender differences, boys display more antisocial behaviors and less prosocial behaviors compared with girls. Significant gender differences are also found in the effect of economic strain on adolescent social behavior.ConclusionsThis study contributes to current knowledge by revealing the psychosocial mechanisms between economic strain and adolescent antisocial/prosocial behaviors. Findings highlight the gender differences in behavioral development among Chinese adolescents.
Cardiovascular effects and mechanisms of sodium‐glucose cotransporter‐2 inhibitors
Authors: Yang Fan , Meng Ran , Zhu Da‐Long 
Published: August 2020

AbstractSodium‐glucose cotransporter‐2 inhibitors (SGLT2 inhibitors) are a new type of drug for the treatment of diabetes, and they have been proven to have a good hypoglycemic effect. Several lines of clinical evidence have shown that SGLT2 inhibitors can significantly reduce the risks of atherosclerosis, hospitalization for heart failure, cardiovascular death, and all‐cause mortality and delay the progression of chronic kidney disease. Because of the protective effects of SGLT2 inhibitors on the heart and kidney, they are being studied for the treatment of heart failure and chronic kidney disease in patients without diabetes. Therefore, it is necessary for cardiologists, patients with diabetes, and nephrologists to fully understand this type of drug. In this review, we summarize the following three aspects of SGLT2 inhibitors: the recent clinical evidence of their cardiovascular benefits, their mechanisms of action, and their safety.
Visual Conformity with Affirmed Gender or “Passing”: Its Distribution and Association with Depression and Anxiety in a Cohort of Transgender People
Authors: To Margaret , Zhang Qi , Bradlyn Andrew , Getahun Darios , Giammattei Shawn , Nash Rebecca , Owen-Smith Ashli A. , Roblin Douglas , Silverberg Michael J. , Tangpricha Vin , Vupputuri Suma , Goodman Michael 
Published: August 2020

Abstract

Background
Visual conformity with affirmed gender (VCAG) or “passing” is thought to be an important, but poorly understood, determinant of well-being in transgender people. VCAG is a subjective measure that is different from having an inner sense of being congruent with one's gender identity.

Aim
We examined the frequency and determinants of VCAG and explored its association with mental health outcomes in a cohort of transgender adults.

Methods
The “Study of Transition, Outcomes & Gender (STRONG)” is a cohort of transgender individuals recruited from 3 Kaiser Permanente health plans located in Georgia, Northern California and Southern California. A subset of cohort members completed a survey between 2015 and 2017. VCAG was assessed as the difference between 2 scales: scale 1 reflecting the person's sense of how they are perceived by others, and scale 2 reflecting the person's desire to be perceived. Participants were considered to have achieved VCAG when their scale 1 scores were equal to or exceeded their scale 2 scores. The frequency of VCAG and their independent associations with anxiety and depression symptoms were explored using data from 620 survey respondents including 309 transwomen and 311 transmen. Based on self-described gender identity, none of the participants identified as nonbinary or gender fluid.

Outcomes
VCAG, depression, and anxiety.

Results
VCAG was achieved in 28% of transwomen and 62% of transmen and was more common in persons who reported greater sense of acceptance and pride in their gender identity as measured on the Transgender Congruence Scale. Another factor associated with greater likelihood of VCAG was receipt of gender-affirming surgery, but the association was only evident among transmen. Participants who achieved VCAG had a lower likelihood of depression and anxiety with prevalence ratios (95% confidence intervals) of 0.79 (0.65, 0.96) and 0.67 (0.46, 0.98), respectively.

Clinical Implications
VCAG may serve as an important outcome measure after gender-affirming therapy.

Strengths and Limitations
Strengths of this study include a well-defined sampling frame and use of a novel patient-centered outcome of interest. Cross-sectional design and uncertain generalizability of results are the limitations.

Conclusion
These results, once confirmed by prospective studies, may help better characterize the determinants of well-being in the transgender community, facilitating the design of interventions to improve the well-being and quality of life of this vulnerable population.
Paleomagnetism of Paleocene‐Maastrichtian (60–70 Ma) Lava Flows From Tian Shan (Central Asia): Directional Analysis and Paleointensities
Authors: Meng Jun , Lhuillier Florian , Wang Chengshan , Liu Hao , Eid Baha , Li Yalin 
Published: August 2020

AbstractThe Tuoyun volcanics from the Tian Shan range (Central Asia) give an opportunity to investigate the variability of the Earth's magnetic field during the Cretaceous and Early Paleogene. In the paper we focus on Maastrichtian‐Paleocene basalts and report new paleomagnetic results from 70 lava flows (respectively 45 directional groups) sampled near Tuoyun village (75.33°E; 40.18°N) from three distinct sections. Combined with previous results, our new data set yields a virtual geomagnetic pole at φS = 180.2°E, ϑS = 49.5°N with an angular standard deviation
(for N = 93 directional groups). The mean inclination Is = 36.2° is indicative of an emplacement of the Tuoyun volcanics at a paleolatitude around 20°N, consistent with the high dispersion k = 14.6 of the directions. Such an inclination value is 10–15° lower than the predictions from the apparent polar wander paths for stable Europe and East Asia. This observation can be partly explained by crustal shortening within the East Asian plate during the India‐Asia convergence, but also needs to invoke a local field anomaly in Central Asia as previously proposed. Our absolute paleointensity experiments conducted on two lava flows and two baked sedimentary layers yield a mean virtual dipole moment of 58.9 ± 6.9 ZA·m2, consistent with the values at 60–70 Ma in the global paleointensity database. Compared to relative paleointensity results during the Cretaceous Normal Superchron and during the Plio‐Pleistocene, the relative variability in intensity—supposed to be a proxy for the geodynamo's activity—estimated here at 31 ± 5% (N = 15) from pseudo‐Thellier experiments possibly corroborates a correlation between geomagnetic reversal frequency and paleosecular variation rate during the past 120 Myr.