bluuebunny/crossref_metadata_2025_split huggingface dataset:
Multihour Stratospheric Flights with the Heliotrope Solar Hot-Air Balloon
Authors: Bowman Daniel C. , Norman Paul E. , Pauken Michael T. , Albert Sarah A. , Dexheimer Darielle , Yang Xiao , Krishnamoorthy Siddharth , Komjathy Attila , Cutts James A. 
Published: April 2020

AbstractStandard meteorological balloons can deliver small scientific payloads to the stratosphere for a few tens of minutes, but achieving multihour level flight in this region is more difficult. We have developed a solar-powered hot-air balloon named the heliotrope that can maintain a nearly constant altitude in the upper troposphere–lower stratosphere as long as the sun is above the horizon. It can accommodate scientific payloads ranging from hundreds of grams to several kilograms. The balloon can achieve float altitudes exceeding 24 km and fly for days in the Arctic summer, although sunset provides a convenient flight termination mechanism at lower latitudes. Two people can build an envelope in about 3.5 h, and the materials cost about $30. The low cost and simplicity of the heliotrope enables a class of missions that is generally out of reach of institutions lacking specialized balloon expertise. Here, we discuss the design history, construction techniques, trajectory characteristics, and flight prediction of the heliotrope balloon. We conclude with a discussion of the physics of solar hot-air balloon flight.
Effects of Kinesio Taping and compression stockings on pain, edema, functional capacity and quality of life in patients with chronic venous disease: a randomized controlled trial
Authors: Naci Baha , Ozyilmaz Semiramis , Aygutalp Nadir , Demir Rengin , Baltaci Gul , Yigit Zerrin 
Published: April 2020

Objective: The aim of this study was to compare the effects of Kinesio Taping and compression stockings on pain, edema, functional capacity and quality of life in patients with chronic venous disease (CVD). Design: This is a prospective, randomized, controlled, single-blind clinical trial. Setting: The study was conducted in a physiotherapy and rehabilitation unit of a university hospital. Subjects: A total of 62 patients with early-stage CVD were allocated to either an experimental group or a control group. Interventions: Experimental group ( n = 29) received Kinesio Taping intervention once a week for four weeks, while control group ( n = 29) received compression stockings for four weeks. All patients additionally undertook an exercise training programme including calf muscle pump exercises, flexibility exercises and diaphragmatic breathing. Main measures: Visual analogue scale, lower limb circumference measurements, 6-minute walk test and Short Form 36 questionnaire were applied before and after four weeks of treatment. Results: Control group showed statistically significant improvements in pain ( P < 0.001), ankle circumferences (right, P = 0.002; left, P = 0.037), calf circumferences (right, P = 0.020; left, P = 0.022), knee circumference (left, P = 0.039) and thigh circumferences (right, P = 0.029; left, P = 0.002) compared with experimental group. There were no significant differences between groups with respect to functional capacity and quality of life ( P > 0.05). Both groups significantly improved 6-minute walk distance ( P < 0.001) and Short Form 36 physical component summary (experimental group, P = 0.002; control group, P = 0.006). Conclusion: This study demonstrated that Kinesio Taping and compression stockings revealed similar improvements of functional capacity and quality of life in patients with CVD. The symptoms of pain and edema caused by CVD can be decreased more efficiently with compression stockings than Kinesio Taping intervention.
Effects of a core stabilization training program on balance ability in persons with Parkinson’s disease: a randomized controlled trial
Authors: Cabrera-Martos Irene , Jiménez-Martín Ana Teresa , López-López Laura , Rodríguez-Torres Janet , Ortiz-Rubio Araceli , Valenza Marie Carmen 
Published: April 2020

Objective: To explore the effects of an eight-week core stability program on balance ability in persons with Parkinson’s disease. Design: Randomized controlled trial. Setting: A local Parkinson’s association. Subjects: A total of 44 participants with a clinical diagnosis of Parkinson’s disease were randomly assigned to an experimental ( n = 22) or control group ( n = 22). Intervention: The experimental group received 24 sessions of core training, while the control group received an intervention including active joint mobilization, muscle stretching, and motor coordination exercises. Main measures: The primary outcome measure was dynamic balance evaluated using the Mini-Balance Evaluation Systems Test. Secondary outcomes included the balance confidence assessed with the Activities-specific Balance Confidence Scale and standing balance assessed by the maximal excursion of center of pressure during the Modified Clinical Test of Sensory Interaction on Balance and the Limits of Stability test. Results: After treatment, a significant between-group improvement in dynamic balance was observed in the experimental group compared to the control group (change, 2.75 ± 1.80 vs 0.38 ± 2.15, P = 0.002). The experimental group also showed a significant improvement in confidence (change, 16.48 ± 16.21 vs 3.05 ± 13.53, P = 0.047) and maximal excursion of center of pressure in forward (change, 0.86 ± 1.89 cm vs 0.17 ± 0.26 cm, P = 0.048), left (change, 0.88 ± 2.63 cm vs 0.07 ± 0.48 cm, P = 0.010), and right (change, 1.63 ± 2.82 cm vs 0.05 ± 0.17 cm, P = 0.046) directions of limits of stability compared to the control group. Conclusion: A program based on core stability in comparison with non-specific exercise benefits dynamic balance and confidence and increases center of mass excursion in patients with Parkinson’s disease.
Association of interleukin 10 rs1800896 polymorphism with susceptibility to breast cancer: a meta-analysis
Authors: Zhu ZiYin , Liu Ji-Bin , Liu Xi , Qian LinXue 
Published: April 2020

Objective To evaluate the correlation between interleukin 10 (IL-10) −1082A/G polymorphism (rs1800896) and breast cancers by performing a meta-analysis. Methods The Embase and Medline databases were searched through 1 September 2018 to identify qualified articles. Odds ratios (OR) and corresponding 95% confidence intervals (CIs) were applied to evaluate associations. Results In total, 14 case-control studies, including 5320 cases and 5727 controls, were analyzed. We detected significant associations between the IL10 −1082 G/G genotype and risk of breast cancer (AA + AG vs. GG: OR = 0.88, 95% CI = 0.80–0.97). Subgroup analyses confirmed a significant association in Caucasian populations (OR = 0.89, 95% CI = 0.80–0.99), in population-based case-control studies (OR = 0.87, 95% CI = 0.78–0.96), and in studies with ≥500 subjects (OR = 0.88, 95% CI = 0.79–0.99) under the recessive model (AA + AG vs. GG). No associations were found in Asian populations. Conclusions The IL10 −1082A/G polymorphism is associated with an increased risk of breast cancer. The association between IL10 −1082 G/G genotype and increased risk of breast cancer is more significant in Caucasians, in population-based studies, and in larger studies.
Clinical nurses’ nasogastric feeding practices in adults: a multicenter cross-sectional survey in China
Authors: Xu Li-chun , Huang Xiao-jin , Lin Bi-xia , Zheng Jun-yi , Zhu Hai-hua 
Published: April 2020

Objective We aimed to investigate practices of nasogastric tube (NGT) intubation and feeding for adults by clinical nurses in China. Methods A self-designed and validated questionnaire comprising 30 questions was distributed to 560 clinical nurses in three comprehensive hospitals of Xiamen, China. The questionnaire covered participants’ demographic characteristics, NGT placement, administration of enteral nutrition (EN), and monitoring or management of feeding intolerance. Results A total 464 (82.9%) questionnaires were completed; 36.2% of nurses used nose–ear–xiphoid and 79.5% forehead–xiphoid measurement to define the internal length of the NGT. Many participants still used traditional methods to confirm NGT placement (auscultation of injected air 50.2%, bubble test 34.7% and observing feeding tube aspirate 34.3%). Bolus feeding was the most commonly used technique to administer EN. A total 97.0% of all nurses used syringes to measure gastric residual volume (GRV), and 62.7% measured GRV every 4–8 hours. The most frequently used GRV threshold values were 200 mL (44.6%) and 150 mL (25.2%). Most nurses stopped feeding immediately when encountering high GRV (84.3%) or diarrhea (45.0%). The nasogastric feeding practices of many clinical nurses were not consistent with international guidelines. Conclusions Our study can provide an impetus for nursing administrators to revise their nasogastric feeding procedures, to promote compliance with evidence-based guidelines.
Pelvic floor biometry in asymptomatic primiparous women compared with nulliparous women: a single-center study in Southern China
Authors: Mao Yong-jiang , Zheng Zhi-juan , Xu Jie-hua , Xu Jing , Zhang Xin-ling 
Published: April 2020

Objective This study aimed to investigate pelvic floor biometry of asymptomatic primiparous women compared with nulliparous women by using four-dimensional transperineal ultrasound (4D TPUS). Methods From July 2015 to February 2017, 722 women were enrolled and divided into the nulliparous group (n = 292), the vaginal delivery group (n = 272), and the elective cesarean section group (n = 158). The ultrasound parameters of 4D TPUS were compared among the groups. Results The vaginal delivery group had a significantly greater bladder neck descent (η2 = 0.04), retrovesical angles on Valsalva maneuver (η2 = 0.01), urethral rotation (η2 = 0.01), levator hiatus area on Valsalva maneuver (η2 = 0.02), urethral inclination angle (η2 = 0.02), and funneling of the proximal urethra (η2 = 0.11) than the other two groups. Comparison of the two modes of delivery (vaginal delivery and cesarean section) also showed significant differences in the above-mentioned ultrasound parameters. Conclusion There are significant differences in pelvic floor biometry between asymptomatic primiparous women and nulliparous women, as well as between women with vaginal delivery and those with elective cesarean section.
Prophylactic low-molecular-weight heparin administration protected against severe acute pancreatitis partially by VEGF/Flt-1 signaling in a rat model
Authors: Li S , Zhang S , Li R , Chen S , Chang S , Chen X , Li Y , Su X , Wu T , Xu M 
Published: April 2020

Background: The present study was aimed to explore the effects and the underlying mechanism of prophylactic low-molecular-weight heparin (LMWH) treatment on taurocholate-induced severe acute pancreatitis (SAP) in a rat model. Methods: Rat SAP model was induced by injection of 4% sodium taurocholate into the pancreatic duct. LMWH was applied half an hour before the induction of pancreatitis at the dose of 200 IU/kg subcutaneous injection. The rats were euthanized at 1 h, 6 h, and 12 h after taurocholate-induced SAP. The inflammatory and oxidative response markers were assessed. And the vascular endothelial growth factor (VEGF) and Fms-related tyrosine kinase 1 (Flt-1) expression were evaluated by immunohistochemistry (IHC) and western blot methods. Results: The expression of inflammatory and oxidative response markers increased after induction of SAP. IHC and western blot results showed the VEGF and Flt-1 expression were increased in SAP group. Prophylactic LMWH administration reduced the inflammatory and oxidative response markers expression and decreased the expression of VEGF and Flt-1. Conclusions: This study suggested that prophylactic LMWH treatment mitigated the severity of pancreatitis in rat SAP model by anti-inflammation and oxidative response. The underlying mechanism may result from downregulating VEGF/Flt-1 signaling of LMWH in SAP rat model.
The Flipkart Story in India: From the Start to Walmart
Authors: Rajan Thomason 
Published: April 2020

Flipkart was launched in 2007 as an online platform for selling books by Sachin Bansal and Binny Bansal. Ten years later, the e-commerce company had 54 million active users and 100,000 plus sellers and had sold 261 million units. The founders had taken several steps to garner this growth, by making investments in technology, undertaking high-decibel advertising campaigns and promoting attractive offers on products sold on the platform. Despite the growth, the company was not making profits, and investors like Tiger Global were unhappy. Tiger Global Management brought in Kalyan Krishnamurthy to Flipkart in 2016, and a year later, Kalyan became the chief executive officer (CEO), replacing co-founder Binny who got promoted as group CEO. In May 2018, American retailer Walmart paid USD 16 billion to buy out Flipkart and in the same month, Sachin exited the venture by selling his shares for USD 1 billion. Seven months later, Binny was forced to resign on charges of personal misconduct. As these events unfolded, Flipkart was no longer the company founded by the Bansals. The case highlights critical issues in the Flipkart growth story and helps readers understand the nuances in managing stakeholders, including customers and investors.
Prognostic factors in progressive high-grade glial tumors treated with systemic approach: A single center experience
Authors: Alan Ozkan , Telli Tugba Akin , Tuylu Tugba Basoglu , Arikan Rukiye , Demircan Nazım Can , Ercelep Ozlem , Kaya Serap , Babacan Nalan Akgul , Atasoy Beste M , Bozkurt Suheyla , Bayri Yasar , Gul Dilek , Ekinci Gazanfer , Ziyal Ibrahim , Dane Faysal , Yumuk P Fulden 
Published: April 2020

Purpose Malignant high-grade gliomas are the most common and aggressive type of primary brain tumor, and the prognosis is generally extremely poor. In this retrospective study, we analyzed the outcome of systemic treatment in recurrent high-grade glioma patients and the impact of prognostic factors on survivals. Methods Data from 114 patients with recurrent high-grade glioma who received systemic treatment and followed in our clinic between 2012 and 2018 were retrospectively analyzed. Eastern Cooperative Oncology Group (ECOG) performance status, age, gender, histology, type of surgical resection, side effects after systemic treatment (deep vein thrombosis, hypertension, proteinuria), IDH1 and alpha thalassemia/mental retardation syndrome X-linked (ATRX) mutation status were investigated as prognostic factors for progression-free survival and overall survival. Results At the time of diagnosis, the median age was 48 (17–77) and 68% of the patients were male. Most common pathologic subtype was glioblastoma multiforme (68%). Median follow-up duration was 9.1 months (1–68 months). Median progression-free survival and overall survival were 6.2 months and 8 months, respectively. In multivariate analysis, ECOG PS, deep venous thrombosis and the presence of ATRX and IDH1 mutation were found to be independent prognostic factors for progression-free survival (p < 0.05) and, ECOG PS, the presence of ATRX and IDH1 mutation for overall survival (p < 0.05). Conclusion Our study is real life data and the median progression-free survival and overall survival rates are similar to the literature. We have found ECOG PS, presence of ATRX and IDH1 mutation to be independent prognostic factors for both progression-free survival and overall survival.
Results of a Single Arm Pilot Study of a Mobile Messaging Intervention for Hookah Tobacco Cessation in Young Adults
Authors: Mays Darren , Phan Lilianna , Johnson Andrea C , Tercyak Kenneth P , Snow Kylie , Luta George , Rehberg Kathryn , Lipkus Isaac 
Published: April 2020

Background: Hookah tobacco use is common among young adults. Unlike cigarette smoking, there is limited evidence on mobile (ie, mHealth) interventions to promote cessation. Objectives: This pilot study tested the preliminary effects of mobile messaging for cessation in young adult hookah smokers. Methods: Young adults (N = 20) aged 18 to 30 years who smoke hookah at least monthly and have done so at least once in the past 30 days received a 6-week mHealth multimedia messaging (text and images) intervention. Message scheduling (2 days/week × 6 weeks) was based on the literature. Content was developed iteratively by the study team and focused on health harms and addictiveness of hookah. Content was individually tailored by baseline hookah use frequency, risk beliefs, and responses to interactive text messages assessing participants’ hookah tobacco use behavior and beliefs to maximize impact. Engagement was assessed during the intervention, and we examined effects on risk perceptions, risk beliefs, and risk appraisals, motivation to quit, and behavior change immediately post-intervention. Results: Participants responded to 11.5 (SD = 0.69) of 12 text message prompts on average, endorsed high message receptivity (M = 6.1, SD = 0.93, range = 1-7), and reported the messages were helpful (M = 8.5, SD = 1.5, range = 1-10). There were significant ( P < .05) increases in risk perceptions (d’s = 0.22-0.88), risk appraisals (d = 0.49), risk beliefs (d = 1.11), and motivation to quit (d = 0.97) post-intervention. Half of participants reported reducing frequency of hookah use (20%) or quitting completely (30%) by end of treatment. Conclusions: These pilot results provide preliminary support for an mHealth messaging intervention about risks of hookah tobacco for promoting cessation. Rigorously examining the efficacy of this promising intervention is warranted.
Exploring Goal Conflicts and How They Are Managed in a Biomedical Laboratory Using Rasmussen’s Model of Boundaries
Authors: Vijayan Viji , Smoker Anthony John 
Published: April 2020

Introduction: Occupational health and safety management systems are widely used as a systematic approach to managing occupational health and safety. However, sometimes they are restrictive and underspecified to deal with dynamic workplace demands. Rasmussen used a model of boundaries to conceptualize this dynamic model of safety, where the space of possibilities lay within 3 boundaries and workers used various means to stay within the boundaries to remain both productive and safe at work. Methods: This study applied the Rasmussen model of boundaries to understand the factors that formed the boundaries, the gradients, and countergradients in a biomedical laboratory. Results: The most central goal was to be the first to publish, and this formed the boundary to scientific output failure; the boundary to unacceptable workload and boundary to functionally acceptable performance were the other 2 boundaries in line with the Rasmussen model. The workers had developed methods (mental risk assessment, teamwork, and experience and familiarity) of working, which ensured they remained productive and safe. This can be described as resilient performance, where resilience is not something that a system has but something it does to adjust their performance when faced with expected or unexpected changes. Discussion and Conclusion: A customized portfolio of rule-based non negotiable instructions and a risk assessment–based approach would be best suited for a biomedical laboratory. The workers have learned resilient performance on their own and unknowingly are already practicing this. It is now time to formally incorporate such practices into the safety systems of biomedical laboratories.
A Novel Technique for the Management of Massive Hemoptysis: The Customized Endobronchial Silicone Blocker
Authors: Mehta Ravindra M. , Godara Rakesh , Bhat Rajani Surendar , Loknath Chakravarthi , Singla Abhinav 
Published: April 2020

Objective Massive hemoptysis (MH) has a high mortality rate. Therapeutic options include bronchoscopy for endobronchial lesions, bronchial artery embolization (BAE), and emergency surgery. Scant options exist for patients who are not candidates for these modalities. Culprit bronchial segment occlusion is an option to prevent “spillover flooding → hypoxia.” Applying this concept, we describe a case series of MH control using a novel bronchoscopically inserted customized endobronchial silicone blocker (CESB). We analyzed the safety and efficacy of CESBs in a select subset of patients with MH. Methods Inclusion criteria were patients with MH who were unstable for surgery/BAE, failed BAE, or relatively contraindicated/refused BAE. CESBs were manufactured on-site by modifying silicone stents, inserted using rigid bronchoscopy and reinforced with glue. The CESB was removed after 6 weeks when possible. A successful outcome was defined as immediate bleeding control with no recurrence after removal. Results Over 4.5 years, 13 episodes of MH in 12 patients meeting the criteria specified earlier were treated with CESBs. Seven of 12 patients had tuberculosis, 4 active and 3 inactive. One patient had mucormycosis, 1 post-lobectomy, 1 endobronchial renal cell carcinoma, 1 fibrosing mediastinitis, and 1 patient had metastatic laryngeal Ca. Eight of 12 patients were taken for primary-CESB placement. Four of 12 patients were sent for BAE, which was unsuccessful, and rescue-CESB was done for definitive management. The success rate, as defined earlier, was 92.3%, with no deaths from MH. Conclusions Innovative bronchoscopically inserted CESBs are an effective strategy in MH when patients are unstable or fail conventional management.
Subterminal key pinch dynamometry: a new method to quantify strength deficit in ulnar nerve paralysis
Authors: Bertelli Jayme Augusto 
Published: April 2020

Precise pre- and postoperative assessments are fundamental to recording the quality of recovery after ulnar nerve repair. Because of its imprecision, manual muscle testing is being replaced by dynamometry to measure grasping and key-pinch strengths. However, both grasping and key pinch are dependent not only on the ulnar nerve but also the median and radial nerves. We propose to measure strength using a new sort of pinch, called the ‘subterminal key pinch’. Strength was measured using a commercially available pinch meter. Patients applied pressure on the dynamometer with the interphalangeal joint of the thumb, maintaining the joint in extension to avoid enhancement of strength by the flexor pollicis longus. We examined 17 patients before ulnar nerve repair. Preoperatively, grasping strength was 46% of normal, while key pinch was 58%, pinch-to-zoom strength was 26% and subterminal key pinch only 7%. Subterminal key pinch was the most affected pinch with a strength deficit of over 90%. Level of evidence: IV
Free-Hand Cervical Pedicle Screw Placement by Using Para-articular Minilaminotomy: Its Feasibility and Novice Neurosurgeons’ Experience
Authors: Park Jong-Hwa , Lee Jong Young , Lee Byoung Hun , Jeon Hong Jun , Park Seung-Woo 
Published: April 2020

Study Design.: Retrospective study. Objective.: Cervical pedicle screw (CPS) placement is technically demanding because of the great variation in pedicle size, dimension, and angulations between cervical levels and patients and the lack of anatomical landmarks. This retrospective study was conducted to analyze novice neurosurgeons’ experience of CPS placement by using the technique with direct exposure of pedicle via para-articular minilaminotomy. Methods.: We retrospectively reviewed 78 CPSs in 22 consecutive patients performed by 2 surgeons. All pedicle screws were inserted under the direct visualization of the pedicle by using para-articular minilaminotomy without any fluoroscopic guidance. We analyzed the direction and grade of pedicle perforation on the postoperative computed tomography scan. The degree of perforation was classified as grade 0 to 3. Grades 0 and 1 were classified as the correct position and the others, as the incorrect position. Results.: In total, the correct position (grade 0 and 1) was found in 72 (92.3%) screws and the incorrect position (grade 2 and 3) in 6 (7.7%). Among the 16 pedicle perforations (grade 1, 2, and 3 perforations), the directions were lateral in 15 (93.8%) and superior in 1 (6.2%). There were no neurovascular complications related to CPS insertion. Conclusion.: Free-hand CPS placement by using para-articular minilaminotomy seems to be feasible and reproducible.