bluuebunny/crossref_metadata_2025_split huggingface dataset:
MODELAGEM DA ALTURA E VOLUME DE Tectona grandis L.F. NA MESORREGIÃO NORDESTE DO PARÁ
Authors: Cerqueira Clebson Lima , Lisboa Gerson dos Santos , De Jesus França Luciano Cavalcante , Môra Rômulo , Marques Glaucio Marcelino , Salles Thiago Taglialegna , Brianezi Daniel 
Published: August 2024

Objetivou-se avaliar o desempenho de modelos estatísticos para predição da altura e volume de Tectona grandis em povoamentos localizados no município de São Francisco, mesorregião Nordeste do estado do Pará. Os dados para o ajuste dos modelos hipsométricos e volumétricos foram obtidos por meio de inventário florestal e cubagem rigorosa em povoamentos de origem seminal com dez (10) anos de idade em espaçamento 3 x 2 m. Foram mensurados o diâmetro com casca a 1,3 m de altura (dap) e altura total (h) de 47 indivíduos para ajuste das equações hipsométricas. Para obtenção dos volumes observados e ajuste dos modelos volumétricos foram cubadas 140 árvores. As equações de Stoffels e Shumacher e Hall respectivamente. As equações de Stoffels e Schumacher-Hall são recomendadas para auxiliar nos inventários florestais e estimativa do volume de madeira em povoamentos de Tectona Grandis na mesorregião Nordeste do Pará e regiões semelhantes.Palavras-chave: teca, inventário florestal, ajuste de equações. MODELING OF HEIGHT AND VOLUME OF Tectona grandis L. F. IN THE NORTHEASTERN MESOREGION OF PARÁ, BRAZIL ABSTRACT:The objective of this study was to evaluate the performance of statistical models for the prediction of height and volume of Tectona grandis in stands located in the municipality of São Francisco, in the northeastern region of Pará state. The data for fit the hypsometric and volumetric models were obtained through a forest inventory and strict cubing in stands of seminal origin with ten (10) years old in spacing 3 x 2 m. (Dbh) and total height (h) of 45 individuals for fit the hypsometric equations. To obtain the observed volumes and fit of the volumetric models, 140 trees were cubed. The Stoffels and Schumacher-Hall equations are recommended to aid in forest inventories and wood volume estimation in Tectona Grandis stands in the northeastern meso-region of Pará.Keywords: teak, forest inventory, fit of equations. DOI: http://dx.doi.org/10.5935/2318-7670.v05nespa22
BIOMETRIA DE FRUTOS E SEMENTES DA CASTANHEIRA-DO-BRASIL DA REGIÃO MÉDIO-NORTE DO MATO GROSSO
Authors: Borella Daniela Roberta , Silva Andréa Carvalho da , Souza Adilson Pacheco de , Bouvié Luana , Nogueira Lucas Alencar da Silva , Pereira César Augusto de Lima , Silva Marco Aurélio Lisbôa Viscardi da 
Published: August 2024

Neste estudo caracterizou-se biometricamente os frutos e as sementes de Bertholletia excelsa Humb. & Bonpl., oriundas dos municípios de Itaúba e Cláudia, MT. As coletas dos frutos de dez matrizes em área de mata nativa ocorreram em 26/11 e 22/12/14 e 10/03/15. Foram coletados todos os frutos no chão sob projeção da copa da matriz. Foram determinadas as seguintes variáveis: diâmetros equatorial e longitudinal do fruto e da semente, espessura do exocarpo e mesocarpo, massa do fruto e das sementes por fruto, número de frutos por planta e número de sementes por fruto. Os frutos apresentaram massa fresca entre 136 e 163 g, diâmetros médios de 34 cm (com exocarpo), espessura total superior a 11 cm (exocarpo + mesocarpo) e 17 sementes por fruto. A massa das sementes de B. excelsa sem tegumento variou de 2,95 a 4,20g. No beneficiamento dos frutos e das sementes da castanheira-do-Brasil na região Médio-Norte, MT, são gerados 68,35% de resíduos. Na safra 14/15, o pico de dispersão dos frutos de B. excelsa ocorreu no mês de dezembro. Coletas tardias de frutos (março) geram baixa qualidade do fruto e da semente.Palavras-chave: Bertholletia excelsa, castanha, produto florestal não-madeireiro, extrativismo. BIOMETRY OF FRUIT AND SEEDS OF BRAZIL CHESTNUT ORIGINITING OF THE MEDIUM-NORTH REGION OF MATO GROSSO STATE ABSTRACT:In this study the fruits and seeds of Bertholletia excelsa Humb. & Bonpl., from the municipalities of Itaúba and Cláudia, MT, were characterized biometrically. The fruits collected from ten matrices in a native forest area. The colletions occurred on 11/26 and 12/22/14 and 10/03/15. All fruits were collected on the ground and under projection of the canopy of the matrix. The following variables were determined: equatorial and longitudinal diameters of fruit and seed, exocarp and mesocarp thickness, fruit and seed mass per fruit, number of fruits per plant and number of seeds per fruit. The fruits presented a fresh mass between 136 and 163 g, average diameters of 34 cm (with exocarp), total thickness superior to 11 cm (exocarp + mesocarp) and 17 seeds per fruit. The seed mass of B. excelsa without tegument ranged from 2.95 to 4.20 g. In the processing of fruits and seeds of Brazilian chestnut in the region of Medium-North, MT, 68.35% of waste is generated. In the 14/15 season, the fruit dispersion peak of B. excelsa occurred in the month of December. Late fruit collections (March) generate poor quality of fruit and seed.Keywords: Bertholletia excelsa, chestnut, non-timber forest product, extractivism. DOI: http://dx.doi.org/10.5935/2318-7670.v05nespa04
Simulation of Active Suspension System for Half Vehicle Model under Different Road Profile
Authors: O. Hamdoon Farouk , M. Faisal Batool 
Published: August 2024

The main function of the vehicle suspension system is to provide comfort for passengers, road handling and vehicle stability. This paper proposes the application of PID controller (proportional, integral and derivative controller) for active suspension system of a half automobile model using MATLAB / SIMULINK. Time domain simulations are carried out to test the performance of the suspension system under different types of road profiles which are the primary inputs of the system. In this paper, three types of road profile inputs (bump, sine wave, random wave) are introduced to excite the suspension system. According to these road profile inputs, the performance response of passive and active suspension systems is simulated. Simulation results show that there is a significant improvement in the performance of the active system over the passive one.
Effect of winglet vortex generators configuration on thermal performance of a heated rectangular channel
Authors: S. Mushatet Khudheyer , lazim edan Iltifat 
Published: August 2024

In present paper, a three dimensional turbulent flow; and heat transfer inside a rectangular channel equipped with array of winglet vortex generators has been investigated experimentally and numerically. Three pairs array of winglet vortex generators of different geometrical configuration as rectangular, triangular, semi circle and parabolic are considered. The array of winglet vortex generators is formed and distributed on the bottom hot surface with a facility for changing the angle of attack from (0° to 60°). ANSYS Fluent Code (15.0) based on a finite volume method is used to get the numerical results while a k-w turbulence model is used to model the turbulent . The Reynolds number range is from 10000 to 50,000 under a constant heat flux boundary condition. The spin wise between the vortex generators are set to 1 cm and 1.5 cm while the stream wise between the vortex are 9cm,12cm and 18 cm respectively. The results indicated that the rectangular winglet vortex generators array indicated the optimum thermal performance with considerable penalty of the pressure drop while the parabolic vortex generator stated the minimum performance among the considered vortex generators shapes. The overall efficiency for rectangular, triangular, semi circle and parabolic winglet vortex generators is enhanced by (166%), (130%), (165%) and (121%) respectively as compared with plane channel.
Shape Function Analysis of Three Dimensional Pre-Tensioned Spherical Dome
Authors: Karim Mohsen Kadhim 
Published: August 2024

Predicting the shape function of a pre-tensioned spherical dome is very important for the safety of a dome structures design and performance under cyclic loading. This paper presents a new shape function mathematical model which is proposed for use with three dimensional pre-tensioned spherical dome that should provide for a more accurate stresses. The new model is proposed based on an improved Airy stress function principle; to retain objectivity of the results for three dimensional pre-tensioned spherical dome. This model is adopted in this study for its simplicity and computational efficiency. The objective of this work is to analyze the response and to describe the behavior of pre-tensioning dome structure under loading. The model provides a very powerful tool for the solution of many problems in elasticity; such applications include tensor analysis of the stresses and strains. Correlation between the proposed model with experimental studies results of pre-tensioned specimens are conducted and show a reasonable agreement. The results are drawn as to the applicability of this approach. Stresses within dome surface are constant and the shear stress is zero when subjected to a hoop stress. The maximum stress occurs at the boundary of the dome intersecting the y-axis and is decreased along the boundary of the disc as it nears the x-axis. The maximum compressive stress occurs at the boundary intersecting with the x-axis and decreases as it nears the z-axis along the interfacing boundary.
Recovery of Cu (II) from Model Water using Emulsion Liquid Membrane (ELM) Technique
Authors: D. Salman Mohammed , Abdul Hussain Adnan 
Published: August 2024

The proper condition of the emulsion liquid membrane (ELM) technique for the recovery and concentration of copper (II) from model water is investigated. The ELM is a solution of di (2-ethylhexyl) phosphoric acid in kerosene and sorbitan monooleate Span 80 as surfactant. The extraction efficiency of the metallic ion in the ELM in batch tests is determined. The results show good extraction percentage in relatively period of time (15 minutes) under the following conditions: pH of the feed is 8; feed concentration of 500 ppm, carrier concentration of di (2-ethyl-hexyl) phosphoric acid (D2EHPA) 4% and treatment ratio (volume of external phase to volume of emulsion phase) of 2.
Effect of GAMMA Rays on some types of viscosity and optical properties for polycarbonate in chloroform at room temperature
Authors: Hasoon Jasim Harith 
Published: August 2024

Some types of viscosity for polycarbonate aqueous solution in Chloroform with concentration of 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5 and 5% were determined for two kinds of samples, first non-radiated & the second, irradiated with source for a rate of 508 rad/min for 20 minutes.
The results show that the values of shear, relative, specific & reduced viscosity were increased with increasing the concentration of polycarbonate in chloroform, Also the properties which had been determined in this work, increased after radiation, this could be attributed to penetration of ionizing radiation in the polymer structure & cross linking the chains.
تقييم مقاومة التربة من خلال فحص التربة الصدمي
Authors: حسين جاسم الركابي علاء , محمد صالح زهير 
Published: August 2024

(clegg Impact ) يقدم هذا البحث دراسة لتقييم مقاومة التربة من خلال الفحص الصدمي بأستخدام جهاز
حيث استخدمت تربة صنف (ML) حسب نضام التصنيف الموحد وحضرت النماذج بكثافات جافة مختلفة ومحتوى رطوبي متغير باستخدام طريقة الرص القياسي والرص المطور ثم تم ايجاد قيم الفحص الصدمي لنماذج التربة المختلفة ومقارنتها مع معاملات القص للتربة (shear strength parameters ) التي تم ايجادها من خلال فحص القص المباشر ومقاومة الانضغاط غير المحصور وكذلك تم عمل تقييم للمقاومة اعتمادا على قيم الفحص الصدمي (C.I)، بالاضافة الى ذلك تم تحديد مدى كفاءة أستخدام الجهاز لتربة ذات طبقات بكثافات مختلفة ووجد بانه كفوء لمدى تربة يصل لـ50سم وفي حالة وجود طبقات بسمك اكبر فأنه يقترح عمل حفرة وانزال الجهاز للاسفل للقياس كل 50 سم, أو أستخدام جهاز بمطرقة ذات وزن أكبر.
Healthcare transition in pediatric neurosurgery: lessons learned from a pilot program for patients with hydrocephalus and spina bifida
Authors: Anderson Megan G. , Mannam Prabhath , Leclair Nathan K. , Martin Jonathan E. , Bookland Markus J. , Kelley Brian J. , Kureshi Inam U. , Hersh David S. 
Published: August 2024

OBJECTIVE
The pediatric neurosurgical community has increasingly recognized the importance of healthcare transition, the process of moving a patient from a pediatric to an adult model of care. However, surveys of pediatric neurosurgeons have revealed that few institutions have formal transition programs. Here, the authors share their preliminary experience with the development of a formal transition pilot program for patients with spina bifida and/or hydrocephalus.

METHODS
Patients 18 years of age or older with a diagnosis of spina bifida and/or hydrocephalus who were followed by a pediatric neurosurgeon at Connecticut Children’s from January 2017 to December 2023 and were recommended to transition to an adult neurosurgeon were retrospectively reviewed. Patients in the informal transition program (ITP) cohort (i.e., the recommendation to transition was made before the formal transition program [FTP] was developed in early 2020) were compared with those in the FTP cohort.

RESULTS
Twenty-two patients met inclusion criteria with 7 (31.8%) in the ITP cohort and 15 (68.2%) in the FTP cohort. The median age at the time of the recommendation to transition was similar in both ITP and FTP cohorts (24 [IQR 20–35] years vs 25 [IQR 24–27] years, respectively). Four (57.1%) patients in the ITP cohort had a confirmed visit with an adult neurosurgeon, compared with 13 (86.7%) patients in the FTP cohort (p = 0.274). One patient in the ITP cohort with a failed transition returned to pediatric neurosurgical care, and 1 patient in the FTP cohort required a shunt revision by an adult neurosurgeon within 1 year of the recommendation to transition.

CONCLUSIONS
Healthcare transition is recognized as a priority within pediatric neurosurgery, but structured, formal transition programs remain underdeveloped. The authors’ preliminary experience with a pilot transition program demonstrated that patients who underwent a formal transition were more likely to successfully establish care with an adult neurosurgeon and trended toward less resource utilization.
Can we do better supporting young adults with cerebral palsy as they navigate adulthood? A review of current and future transitional practices
Authors: Datta Debajyoti , Chiu Hedva , Alazem Hana , McCormick Anna , Sun Guangwen , Tu Albert 
Published: August 2024

OBJECTIVE
Patients with cerebral palsy (CP) face lifelong consequences of their condition, and their healthcare needs evolve as they age. Transitional care for these patients is not universally available and various models have been described. In this article, the authors review the current literature surrounding transitional care for patients with CP, focusing predominantly on the neurosurgical aspects of transitional care, and they describe current approaches adopted by programs in North America. They further describe their own experience developing a transitional care clinic for patients with CP, as well as the integration of this program with a multidisciplinary clinic to address the specific challenges that growing patients face in our region.

METHODS
The authors performed a literature review to identify models, barriers, and assessments of effective transitional care for CP patients. They also reviewed the recommendations of various professional societies regarding transitional care practices. They performed qualitative analysis of the relevant literature.

RESULTS
Transitional care has been broadly categorized into transitional care clinics with multidisciplinary teams and facilitator-led transitional care. CP patients have to overcome a variety of barriers, including those from within the healthcare system as well as environmental and personal, during the period of their transition. These challenges are all interconnected, and navigation requires healthcare professionals to work closely with patients and their caregivers. Multiple instruments are described to measure successful transition, which is likely a reflection of the unique needs that a patient may require. Current guidelines recommend that neurosurgeons select a suitable model of care based on their own local practice and available services, develop a well-defined transition plan, and identify a primary transition facilitator or care coordinator.

CONCLUSIONS
Providing effective transitional care to CP patients remains challenging given the different models of care and the barriers faced by them during the period of transition. In developing a transitional care program for these patients, attention must be given to the resources that are available regionally, with an effort to incorporate the best practices from successful transitional care programs.
Navigating the transition: the crucial shift from pediatric to adult care for individuals living with spina bifida
Authors: Muller Rya , Dziugan Klaudia , Rosen Colleen , Greene Roseann , Bowen Diana , Lam Sandi , Bowman Robin 
Published: August 2024

OBJECTIVE
Spina bifida (SB) is a complex congenital condition characterized by incomplete closure of the neural tube, resulting in varying degrees of physical and neurological impairment. Although commonly managed by multidisciplinary pediatric clinics, a substantial proportion of SB patients are now living into adulthood, necessitating the transition from pediatric to adult healthcare. This transition introduces a myriad of challenges for individuals living with SB and their families. Prior research on SB transition programs has demonstrated anecdotal success; however, minimal research has been published on early posttransition health outcomes and compliance with medical recommendations. This quality improvement study assessed early posttransition compliance with medical recommendations, adverse health events, access to medical supplies/equipment, and patient-reported health outcome and confidence in medical providers.

METHODS
Adult participants in the Spina Bifida Transition Clinic at the authors’ pediatric institution were invited to complete a telephone survey after transition to adult care. The mean (SEM) elapsed time since transition was 1.21 (0.11) years. The survey evaluated adult provider utilization, accessibility of medical supplies and equipment, adverse medical events, compliance with sleep study acquisition, patient-reported health status, and satisfaction with providers.

RESULTS
Of 52 eligible participants, 49 (94%) completed a telephone survey. Within the cohort, 82% had open SB (myelomeningocele), with the remaining having occult SB (lipomyelomeningocele). The mean age at transition was 26.0 years. Since transition, 78% have attended at least one primary care visit, with 76% seeking care from at least one adult care specialist (69% sought care with urologists). Forty-five percent reported an adverse medical event: 31% required an emergency department visit, 22% were hospitalized, 18% underwent surgery, and 24% had skin breakdown. Access to medical supplies varied, with patients experiencing the most difficulty obtaining wheelchairs and assistive walking devices. Patients rated pediatric provider engagement and knowledge of SB significantly higher than adult providers (mean 3.92 vs 3.32, p < 0.001).

CONCLUSIONS
This quality improvement study evaluated the effectiveness of our Spina Bifida Transition Clinic in the early post transition period. While patients have used primary and specialty care (urology), they have experienced many adverse events and low compliance with sleep study acquisition. Continued evaluation of transition programs is required to optimize the outcome of those living with SB.
Barriers to healthcare transition for spina bifida patients: a systematic review
Authors: Colliander Reid , Sloane Dayna C. , Simon Joshua E. , Shlobin Nathan A. , Lam Sandi , Bowman Robin 
Published: August 2024

OBJECTIVE
Patients with spina bifida (SB) were historically followed by pediatric providers throughout their entire lives. Through medical and surgical advancements, now more pediatric SB patients are living well into adulthood. Nonetheless, many patients fail to successfully transition to appropriate adult healthcare providers. The goal of this study was to identify factors that helped facilitate or hinder the successful transition of adolescent and young adult (AYA) SB patients to adult providers.

METHODS
A systematic review was conducted exploring the transition care of SB patients using the PubMed, Embase, and Scopus databases. Titles and abstracts from articles identified were read and selected for full-text review. Studies meeting the inclusion criteria were reviewed in full and analyzed for study design, populations, interventions, and factors influencing transition.

RESULTS
The primary search identified 2050 articles, of which 20 were included in the final review. Thirteen studies discussed factors relating to neurosurgical care, 8 referenced gastrointestinal and genitourinary considerations, 11 examined cognitive and psychosocial factors, and 17 explored healthcare system factors. Several barriers were consistently reported regarding communication, patient and parental attitudes and perceptions, and failure to embrace formalized and transparent protocols. Conflicting results were reported regarding the influence medical comorbidities had on a patient’s ability to transition.

CONCLUSIONS
The process of transitioning AYA SB patients to adult care is complex, involving an interplay of structural and psychosocial factors. The findings in this review suggest that some barriers can be alleviated with improved education, planning, and awareness of factors that influence transition care.