bluuebunny/crossref_metadata_2025_split huggingface dataset:
Mixtures of airborne lidar-based approaches improve predictions of forest structure
Authors: Blackburn Ryan C. , Buscaglia Robert , Sánchez Meador Andrew J. 
Published: March 2021

The most common method for modeling forest attributes with airborne lidar, the area-based approach, involves summarizing the point cloud of individual plots and relating this to attributes of interest. Tree- and voxel-based approaches have been considered as alternatives to the area-based approach but are rarely considered in an area-based context. We estimated three forest attributes (basal area, overstory biomass, and volume) across 1680 field plots in Arizona and New Mexico. Variables from the three lidar approaches (area, tree, and voxel) were created for each plot. Random forests were estimated using subsets of variables based on each individual lidar approach and mixtures of each approach. Boruta feature selection was performed on variable subsets, including the mixture of all lidar-approach predictors (KS-Boruta). A corrected paired t test was utilized to compare six validated models (area-Boruta, tree-Boruta, voxel-Boruta, KS-Boruta, KS-all, and ridge-all) for each forest attribute. Based on significant reductions in error (SMdAPE), basal area and biomass were best modeled with KS-Boruta, while volume was best modeled with KS-all. Analysis of variable importance shows that voxel-based predictors are critical for the prediction of the three forest attributes. This study highlights the importance of multiresolution voxel-based variables for modeling forest attributes in an area-based context.
County‐Level Factors Associated With Cardiovascular Mortality by Race/Ethnicity
Authors: Zuma Bongeka Z. , Parizo Justin T. , Valencia Areli , Spencer‐Bonilla Gabriela , Blum Manuel R. , Scheinker David , Rodriguez Fatima 
Published: March 2021

Background
Persistent racial/ethnic disparities in cardiovascular disease (CVD) mortality are partially explained by healthcare access and socioeconomic, demographic, and behavioral factors. Little is known about the association between race/ethnicity‐specific CVD mortality and county‐level factors.

Methods and Results

Using 2017 county‐level data, we studied the association between race/ethnicity‐specific CVD age‐adjusted mortality rate (AAMR) and county‐level factors (demographics, census region, socioeconomics, CVD risk factors, and healthcare access). Univariate and multivariable linear regressions were used to estimate the association between these factors;
R
2
values were used to assess the factors that accounted for the greatest variation in CVD AAMR by race/ethnicity (non‐Hispanic White, non‐Hispanic Black, and Hispanic/Latinx individuals). There were 659 740 CVD deaths among non‐Hispanic White individuals in 2698 counties; 100 475 deaths among non‐Hispanic Black individuals in 717 counties; and 49 493 deaths among Hispanic/Latinx individuals across 267 counties. Non‐Hispanic Black individuals had the highest mean CVD AAMR (320.04 deaths per 100 000 individuals), whereas Hispanic/Latinx individuals had the lowest (168.42 deaths per 100 000 individuals). The highest CVD AAMRs across all racial/ethnic groups were observed in the South. In unadjusted analyses, the greatest variation (
R
2
) in CVD AAMR was explained by physical inactivity for non‐Hispanic White individuals (32.3%), median household income for non‐Hispanic Black individuals (24.7%), and population size for Hispanic/Latinx individuals (28.4%). In multivariable regressions using county‐level factor categories, the greatest variation in CVD AAMR was explained by CVD risk factors for non‐Hispanic White individuals (35.3%), socioeconomic factors for non‐Hispanic Black (25.8%), and demographic factors for Hispanic/Latinx individuals (34.9%).

Conclusions
The associations between race/ethnicity‐specific age‐adjusted CVD mortality and county‐level factors differ significantly. Interventions to reduce disparities may benefit from being designed accordingly.
The Characterization of Miṣwot and Conception of Halakhah in Rabbinic Non-Halakhic Literature
Authors: Katzoff Binyamin 
Published: March 2021

Abstract
Scholarly discussion concerning rabbinic conceptions of the nature of halakhah—realist vs. nominalist—has for the most part focused on halakhic content and discourse. However, as Schremer has shown, non-halakhic passages may present conceptions that differ from those found in halakhic sources. Following Schremer’s suggested distinction, in this study I examine non-halakhic texts which use various metaphors or linguistic styles to characterize the miṣwot. In the cases I examine, I will demonstrate that the authors could have formulated their content in more than one way, and thus their choice of a particular linguistic style reflects their particular conception of the nature of the miṣwot. My suggestion is that non-halakhic sources that display both modes of thought, realist and nominalist views of Jewish law, offer more accurate reflections of the multifaceted conceptual world of the rabbis than do halakhic texts.
Toward Transient Subgrid-Scale Gravity Wave Representation in Atmospheric Models. Part I: Propagation Model Including Nondissipative Wave–Mean-Flow Interactions
Authors: Bölöni Gergely , Kim Young-Ha , Borchert Sebastian , Achatz Ulrich 
Published: March 2021

AbstractCurrent gravity wave (GW) parameterization (GWP) schemes are using the steady-state assumption, in which an instantaneous balance between GWs and mean flow is postulated, thereby neglecting transient, nondissipative interactions between the GW field and the resolved flow. These schemes rely exclusively on wave dissipation, by GW breaking or near critical layers, as a mechanism leading to forcing of the mean flow. In a transient GWP, without the steady-state assumption, nondissipative wave–mean-flow interactions are enabled as an additional mechanism. Idealized studies have shown that this is potentially important, and therefore the transient GWP Multiscale Gravity Wave Model (MS-GWaM) has been implemented into a state-of-the-art weather and climate model. In this implementation, MS-GWaM leads to a zonal-mean circulation that agrees well with observations and increases GW momentum-flux intermittency as compared with steady-state GWPs, bringing it into better agreement with superpressure balloon observations. Transient effects taken into account by MS-GWaM are shown to make a difference even on monthly time scales: in comparison with steady-state GWPs momentum fluxes in the lower stratosphere are increased and the amount of missing drag at Southern Hemispheric high latitudes is decreased to a modest but nonnegligible extent. An analysis of the contribution of different wavelengths to the GW signal in MS-GWaM suggests that small-scale GWs play an important role down to horizontal and vertical wavelengths of 50 km (or even smaller) and 200 m, respectively.
Pedal Musculovenous Pump Activation Effectively Counteracts Negative Impact of Knee Flexion on Human Popliteal Venous Flow
Authors: Reb Christopher W. , Haupt Edward T. , Vander Griend Robert A. , Berlet Gregory C. 
Published: March 2021

Knee scooters are commonly used for mobility instead of other devices. However, passive popliteal venous flow impedance has been observed with knee scooter usage ostensibly as a result of deep knee flexion. This study aimed to characterize the magnitude of impact knee flexion has on popliteal venous flow in relation to the degree of knee flexion when walking boot immobilized. Furthermore, the countervailing effect of standardized pedal musculovenous pump (PMP) activation was observed. Popliteal venous diameter and flow metrics were assessed with venous ultrasonography in 24 healthy individuals. Straight leg, crutch, and knee scooter positioning while wearing a walking boot and non–weight-bearing were compared. Flow was assessed with muscles at rest and with PMP activation. Of 24 participants, 16 (67%) were female. Twelve limbs (50%) were right sided. The mean age was 21.9 (SD = 3.0) years, and the mean body mass index was 21.9 (SD 1.9) kg/m2. Observer consistencies were excellent (intraclass correlation range = 0.93 to 0.99). No significant differences in mean vessel diameter, time-averaged mean velocity, and total volume flow occurred (all P > .01). Corresponding knee flexion effect sizes were small (range = −0.04 to −0.26). A significant decrease (−24%) in active median time-averaged peak velocity occurred between upright and crutch positions (20.89 vs 15.92 cm/s; P < .001) with a medium effect size (−0.51). PMP activation increased all flow parameters (all P < .001), and effect sizes were comparatively larger (>0.6) across all knee flexion positions. Clinical Significance: Knee flexion has a small to medium impact on popliteal venous return in healthy patients. Active toe motion effectively counters the negative effects of gravity and knee flexion when the ankle is immobilized. Levels of Evidence: Therapeutic, Level IV
Trends in the magnitude of chronic conditions in patients hospitalized with a first acute myocardial infarction
Authors: Tisminetzky Mayra , Miozzo Ruben , Gore Joel M , Gurwitz Jerry H , Lessard Darleen , Yarzebski Jorge , Granillo Edgard , Abu Hawa O , Goldberg Robert J 
Published: March 2021

Background: Among adults with heart disease, there is a high prevalence of concomitant chronic medical conditions. We studied patients with a first acute myocardial infarction to describe: sample population characteristics; trends of the most prevalent pairs of chronic conditions; and differences in hospital management according to burden of these morbidities. Methods and Results: Patients (n = 1,564) hospitalized with an incident AMI at the 3 major medical centers in central Massachusetts during 2005, 2011, and 2015 comprised the study population. Hospital medical records were reviewed to identify 11 more prevalent chronic conditions. The median age of this population was 68 years and 56% were men. The median number of previously diagnosed chronic conditions was 2. Patients hospitalized during 2015 were more likely to be younger than those hospitalized in the earliest study cohorts. The most common pairs of chronic conditions for those hospitalized in 2005 were: anemia-chronic kidney disease (31%), chronic kidney disease-heart failure (30%), and stroke-atrial fibrillation (27%). Among patients hospitalized during 2011, chronic kidney disease-heart failure (29%), hypertension-hyperlipidemia (27%), and hypertension-diabetes (27%) were the most common pairs whereas hypertension-hyperlipidemia (43%), diabetes-heart failure (30%), and chronic kidney disease-diabetes (23%) were the most frequent pairs recorded in 2015. There was a significant decrease in the odds of undergoing cardiac catheterization and a percutaneous coronary intervention in those with higher chronic disease burden in the most recent as compared to earliest study years. Conclusions: Our findings highlight the magnitude of chronic conditions in patients with AMI and the challenges of caring for this vulnerable population.
Layer‐specific strain echocardiography may reflect regional myocardial impairment in patients with hypertrophic cardiomyopathy
Authors: Chen Zhongxiu , Li Chunmei , Li Yajiao , Rao Li , Zhang Xiaoling , Long Dan , Li Chen 
Published: March 2021

AbstractOur study aimed to determine whether layer-specific strain (LSS) could reflect regional myocardial impairment in patients with hypertrophic cardiomyopathy (HCM). The study enrolled 50 patients with HCM and 30 age-matched healthy controls. Transmural gradient of longitudinal strain (TGLS), defined as the difference between the longitudinal strain of the endocardium and epicardium in a left ventricular segment, was used to reflect layer-specific myocardial impairment. Negative TGLS was consistently observed in healthy controls. The TGLS was relatively consistent within the basal, middle, and apical levels in healthy controls,but showed a significant gradient from the base towards the apex. In patients with HCM, the hypertrophic segments had significantly higher TGLS than the relatively normal segments or healthy controls at all 3 levels (0.14 % ± 3.48 % vs. −2.65 % ± 4.44 % vs. −2.17 % ± 1.66 % for basal, − 0.72 % ± 3.71 % vs. −4.02 % ± 4.00 % vs. −3.58 % ± 2.29 % for middle, and − 8.69 % ± 7.96 % vs. −11.44 % ± 6.65 % vs. −10.04 % ± 3.20 % for apex). Abnormal TGLS, defined as positive TGLS, in patients with HCM was associated with chest pain. In receiver operating characteristic curve analysis, a large area of abnormal TGLS (> 4 segments) had moderate accuracy for predicting chest pain (sensitivity, 73.3 %; specificity, 70.0 %). TGLS, a novel LSS derived parameter, may reflect regional myocardial impairment in patients with HCM.
Trunk Injuries in Athletes
Authors: Gundersen Alexandra , Borgstrom Haylee , McInnis Kelly C. 
Published: March 2021

Abstract
Trunk pain is a common cause of performance limitation and time away from sport in athletes. However, atraumatic trunk injuries are underrepresented in medical literature and underrecognized clinically. Delays in diagnosis and initiation of appropriate treatment can increase injury morbidity and return-to-play time. Currently, evidence-based guidelines for diagnosis and treatment of trunk pain in athletes are limited. Thus, we provide an overview of atraumatic sport-related injuries to the thoracic spine (disc herniation, scoliosis, kyphosis), ribcage (bone stress injury, costochondritis, Tietze syndrome, slipping rib syndrome, costovertebral or costotransverse joint dysfunction), and chest and abdominal wall musculature (intercostal, serratus anterior, oblique strains, regional myofascial pain), highlighting sport-specific biomechanical considerations. We aim to increase awareness of these causes of trunk pain among sports medicine providers in an effort to guide diagnostic and treatment recommendations that will ultimately improve overall musculoskeletal health in athletes.
Mouth Cancer: early detection
Authors: Jalota Puja 
Published: March 2021

Puja Jalota reviews the statistics and considers the role of a dental nurse in the early detection of mouth cancer Aim To understand the signs, symptoms, and risk factors of mouth cancer for early detection. Objectives Discuss the meaning of detecting mouth cancer early. Discuss the signs and symptoms of mouth cancer. Discuss the risk factors of mouth cancer. GDC development outcomes A, C, D
Effects of disusing closed suction drainage in simultaneous bilateral total hip arthroplasty: A retrospective cohort study
Authors: Park Chan-Woo , Lim Seung-Jae , Yoo Insun , Lee Youngsik , Won Jae-Yeon , Park Youn-Soo 
Published: March 2021

Purpose
Increased blood loss remains a major drawback of simultaneous bilateral total hip arthroplasty (SBTHA). We examined the effects of disusing closed suction drainage (CSD) on postoperative blood loss and transfusion requirement in cementless SBTHA.

Methods
A retrospective cohort study was conducted with a consecutive series of cementless SBTHAs performed by a single surgeon between January 2014 and March 2017. The surgeon routinely used CSD until May 2015 and refrained from CSD in all primary THAs thereafter. This study included SBTHAs with intravenous administration of tranexamic acid (TXA). Postoperative hemoglobin drop, blood loss, transfusion rate, pain scores, complication rates, and implant survivorships were compared between the groups of SBTHA with and without CSD. The minimum follow-up duration was 1 year.

Results
Among the 110 patients (220 hips), 46 (92 hips) and 64 (128 hips) underwent SBTHA with and without CSD, respectively. Maximum hemoglobin drop (mean, 4.8 vs. 3.9 g/dL; P = 0.001), calculated blood loss (mean, 1530 vs. 1190 mL; P<0.001), transfusion rate (45.7% vs. 21.9%; P = 0.008), and length of hospital stay (mean, 6.6 vs. 5.8 days; P = 0.004) were significantly lower in patients without CSD. There were no significant differences in postoperative pain scales and wound complication rates. The mean Harris Hip scores at final follow-up (92.5 vs. 92.1; P = 0.775) and implant survivorships with an end-point of any revision at 4 years (98.9% vs. 98.4%; log-rank, P = 0.766) were similar between groups.

Conclusions
Disusing CSD significantly reduced postoperative blood loss and transfusion requirement without increasing postoperative pain and surgical wound complications in cementless SBTHA with concurrent administration of intravenous TXA.
Two manual therapy techniques for management of lumbar radiculopathy: a randomized clinical trial
Authors: Danazumi Musa S. , Bello Bashir , Yakasai Abdulsalam M. , Kaka Bashir 
Published: March 2021

Abstract

Context
Evidence has shown that spinal mobilization with leg movement (SMWLM) and progressive inhibition of neuromuscular structures (PINS) are individually effective in the management of lumbar radiculopathy. However, previous evidence reported data for only a short-term study period and did not investigate the effect of the combined manual therapy techniques.

Objectives
To compare the combined effects of two manual therapy techniques (SMWLM and PINS) with the individual techniques alone (SMWLM or PINS) in the management of individuals with lumbar radiculopathy.

Methods
A total of 60 patients diagnosed with unilateral lumbar radiculopathy secondary to disc herniation were randomly allocated into three groups: 20 participants each in the SMWLM, PINS, and combined SMWLM + PINS groups. Each group attended two treatments per week for 30 min each, for three months. Participants were assessed at baseline, immediately posttreatment, and then at three, six, and nine months follow-up using the Visual Analog Scale (VAS), Rolland-Morris Disability Questionnaire (RMDQ), and Sciatica Bothersomeness Index (SBI).

Results
Between-groups analyses using a two-way repeated-measures analysis of variance indicated significant interactions between groups and follow-up times for all outcomes (p=0.001). Participants receiving combined SMWLM + PINS treatment experienced greater improvement in leg pain, back pain, disability, and sciatica at all timelines (immediately posttreatment, and three, six, and nine months follow-up) than the participants receiving SMWLM or PINS alone (p<0.05). However, participants receiving SMWLM alone showed better improvement than the participants receiving PINS alone at all timelines (p<0.05).

Conclusions
A combined SMWLM + PINS treatment protocol showed greater improvement than the individual techniques alone in the management of individuals with LR in this study.
The Difficult alliance. Military cooperation between the ruthenian king Daniel and the Piasts of Mazovia
Authors: Skoczyński Michał 
Published: March 2021

Abstract
The article presents the military cooperation between the King of Galician-Volhynian Ruthenia, Daniel Romanowicz, and the Dukes of Mazovia, Konrad and his son Siemowit. The alliance, based as a counterweight for the cooperation between the King of Hungary and the Piast princes of Lesser Poland, who were trying to conquer Ruthenia and dominate all Piast principalities in then fragmented Poland. It lasted for several decades from the 1220’s to the 1260’s and was primarly aimed at mutual protection against the invasions of the pagan Yotvingians and supporting each other in armed conflicts. The text contains an analysis of war expeditions, tactics and ways of support that were given by both sides of the allianace. It is a new point of view on this aspect of political strategy of both sides that in some ways defined the regional situation. Ruthenians granted masovian Piasts some mobile and political uncommited support in fight with their relatives in Poland, and also secured their border with the Yotvingians. On the other hand, masovian knights were an additional strike force in ruthenian plundering expeditions to Yotvingia. The research was based on the analysis of preserved historical sources and scientific literature using historical methodology.
A cognitive semantic exploration of Englishplantphrasal verbs with the particleoutand their Serbian counterparts
Authors: Milošević Ivan , Pavlović Tijana Vesić 
Published: March 2021

AbstractThis paper explores the semantic motivation of English phrasal verbs with the particleoutwhose constituent verb refers to processes and activities performed by or to plants and their prefixed Serbian counterparts with the prefixesiz-,s- andraz-. The cognitive approach to the semantics of phrasal verbs and prefixes is employed, which entails observing their meaning through the notions of conceptualisation, image-schematic structuring and spatial schematisation. It is shown that there is a high degree of correspondence in the concrete and abstract senses of the contrasted English and Serbian lexemes owing to the same spatial configurations which structure the constituent English and Serbian satellites (the particleoutand the prefixesiz-,s-andraz-, respectively). Additionally, various conceptual metaphors stemming from the domain of PLANTS, inherent in the constituent verb, play a prominent role in the extension of the phrasal and prefixed verb meaning in both languages. The conclusion underlines the benefits of using the cognitive semantic approach in the contrastive studies of particles and prefixes.
Endocannabinoid system in trauma and psychosis: distant guardian of mental stability
Authors: Bielawski Tomasz , Albrechet-Souza Lucas , Frydecka Dorota 
Published: March 2021

Abstract
Central endocannabinoid system (eCBS) is a neuromodulatory system that inhibits potentially harmful, excessive synaptic activation. Endocannabinoid receptors are abundant among brain structures pivotal in different mental disorders development (for example, hippocampus, amygdala, medial-prefrontal cortex, hypothalamus). Here, we review eCBS function in etiology of psychosis, emphasizing its role in dealing with environmental pressures such as traumatic life events. Moreover, we explore eCBS as a guard against hypothalamic-pituitary-adrenal axis over-activation, and discuss its possible role in etiology of different psychopathologies. Additionally, we review eCBS function in creating adaptive behavioral patterns, as we explore its involvement in the memory formation process, extinction learning and emotional response. We discuss eCBS in the context of possible biomarkers of trauma, and in preclinical psychiatric conditions, such as at-risk mental states and clinical high risk states for psychosis. Finally, we describe the role of eCBS in the cannabinoid self-medication-theory and extinction learning.
Betaine Supplementation: A Critical Review of Its Efficacy for Improving Muscle Strength, Power, and Body Composition
Authors: Van Every Derrick W. , Plotkin Daniel L. , Delcastillo Kenneth , Cholewa Jason , Schoenfeld Brad J. 
Published: March 2021

ABSTRACT
Dietary supplements are commonly used by athletes to optimize body composition and/or performance in sport. Trimethylglycine, better known as betaine, is a popular ingredient in sports supplements that has been claimed to enhance performance and lean mass. This article aims to review the current state of the literature as to the potential ergogenic effects of betaine on muscular strength, power, and body composition and draw evidence-based conclusions as to its use as a sports supplement. Animal models indicate beneficial effects of betaine on improvements in body composition; the literature investigating these effects in humans is promising but limited. There are various mechanisms by which betaine may facilitate increases in muscle strength and power; however, the current literature does not seem to support a beneficial effect on these outcomes. Given that betaine does not seem to be associated with any side effects, its short-term use may be worth considering for athletes seeking improved body composition until further research provides more definitive evidence on the topic. The lack of data on long-term safety warrants caution for its continued use.