bluuebunny/crossref_metadata_2025 huggingface dataset:
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.
NEURAL NETWORKS OF ENGINE FAULT DIAGNOSIS BASED ON EXHAUST GAS ANALYSIS
Authors: M. Laftah Rafil , T. Abd-Alwahab Qusai , M. Hamzah Jaafar
Published: August 2024

This work uses the Artificial Neural Networks (ANNs) for fault diagnosis of a single cylinder four stroke gasoline generator type (Astra Korea AST11700). One normal and fourteen faulty conditions are examined experimentally to produce a realistic data set, which is to be used for the training and validation of the ANNs. The resulted data was in the form of exhaust gases and engine speed records for each case separately under different loading conditions. After the learning process is completed, the ANN becomes able to make a diagnosis about the gasoline engine condition when new data is presented. The data presented to the ANN system include a subset of engine faults which were selected and executed experimentally for this topic. These include, faults in carburetor, air filter, spark plug, valves, piston rings, etc. The results showed that the multi layer training algorithm is sufficient enough in diagnose engine faults under different loading conditions. It was found that the correlation coefficient values are 0.999 and 1 for the testing and training data, respectively. The results obtained in this investigation showed that the ANN-based fault diagnosis system is capable of fault diagnosis with high reliability.
A Study on a Developed Electro-Mechanical Epicyclic Power-Drive (EMEC) for Hybrid Electric Vehicles (HEV)
Authors: Baki K. Ali Abdul
Published: August 2024

Hybrid electric vehicles (HEV) draw much attention during the last years due to the need for alternative power resources with reduced emissions. The major disadvantages of HEV are the heavy weight, high cost and complicated control strategies. This paper focuses on a developed design for electro-mechanical differential unit. Most designer uses differential block as a mechanical linkage between two power sources. In this paper the differential unit is modified to do more than linkage. It acts as a continuously-varying-transmission (CVT), electric motivation unit and power regeneration unit. This of course leads to more compact and light weight vehicles.The developed model uses three main units: Synchronous block, Differential block, and Induction block the three blocks are combined in a compact design. Mechanical-electrical power transformation is carried out through the synchronous block which acts also as regeneration unit during braking. On the other hand electrical-mechanical transformation is carried out through the induction unit. The differential unit plays the role of smart linkage between the synchronous and the induction units. Simulation through Matlab-simulink is carried to show the validity of the model. The developed model proved to satisfy the properties of CVT and driving demands torques.
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.
ESTIMATING SOIL LOSS BY WATER EROSION
Authors: M. H. Al-Kadhimi Ahmed , A. A. Al-Saad Zainb , A. A.  Al-Badran Fatima
Published: August 2024

The study is focused on the estimation of rate of soil erosion, using the Universal Soil Loss Equation(USLE), for the embankment of Al-Garma Bridge in Basrah, Iraq. The soil erosion is estimated for the zone of average slope in the study area. The factors considered are rainfall, intensity of rainfall, type of soil, slope length, slope steepness, land use classification, and the existing of soil conservation practices. Detailed analysis of soil samples were done to asses the texture, structure, permeability and organic matter content of the soil samples of the embankment of the Al-Garma Bridge. The average annual erosivity index is obtained as (124.99(MJ. mm/(ha.h))) and the annual average soil erosion rate is estimated as (61.5 t/ha/year).
The Attempt to Stay
Authors: Hänsch Valerie
Published: August 2024

The construction of the Merowe Dam along the Nile in northern Sudan flooded local villages and forced thousands of inhabitants to flee to higher ground. Despite the radical social and environmental transformations and an uncertain future, the Manasir have tried to continue their peasant way of life and resisted relocating to state-run resettlement schemes. Rather than focusing on migration and resettlement, the author follows the people’s attempts to preserve their homeland and have meaningful lives along the emerging reservoir. The book grapples with the fundamental question of how to re-establish life in a world that is falling apart.
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.
The role of a dedicated transition process from pediatric to adult interdisciplinary care for persons with spina bifida
Authors: Jiminez Victoria , Hopson Betsy , Caudill Caroline , Arynchyna-Smith Anastasia , Rogers Suzannah , Rocque Brandon G. , Blount Jeffrey P.
Published: August 2024

OBJECTIVE

Interdisciplinary care and pediatric to adult transitional programs have consistently shown medical and social value for individuals with complex medical conditions such as spina bifida (SB). Such interdisciplinary clinics are common in pediatrics but are rarely offered for adults. This survey-based study reports information related to transition, daily pain burden, and satisfaction with care delivery in an adult SB clinic.

METHODS

A 23-question survey that was based on empirical observations from the adult SB clinic was formulated, IRB approved, and distributed to adult patients. Many respondents had previously received care at the institution’s pediatric SB clinic and completed transition to the adult program. Responses were de-identified, categorized, stored in a secure database, and statistically analyzed using SPSS.

RESULTS

Of 245 patients approached, 116 (47%) surveys were completed and analyzed. Those who had a direct transition (defined as a less than 24-month gap in care) from the pediatric to the adult clinic comprised 44% (n = 51) of responders. The alternative group of 56% (n = 65) had a longer gap, disorganized or absent transition, or had pediatric care elsewhere. The study population had an average age of 36 years, had mostly received childhood care at the authors’ institution, regardless of whether they made a direct transition or had a gap in care (68%), and held the diagnosis of open myelomeningocele (78%). Overall satisfaction with the clinic experience was high (mean score 9.04 on a 10-point subjective scale). Differences regarding independence in activities of daily living based on transition status were not significant, but on multivariate analysis, those who reported independence in activities of daily living had an almost 4-fold higher odds of daily pain (p = 0.024; OR 3.86, 95% CI 1.19–12.5). The most frequently identified areas for improvement included improved access to care and pain control.

CONCLUSIONS

Pediatric transitional processes and interdisciplinary clinics may contribute to improved patient-perceived outcomes and satisfaction with their SB care in comprehensive settings. Further elucidation of barriers to pain control is warranted, in addition to ways in which comprehensive and longitudinal care can improve them.
Transition mentorship for spina bifida patients with the JUMP program: a pilot study
Authors: Maleknia Pedram D. , Hopson Logan , Blount Jeffrey P. , Rocque Brandon G. , Arynchyna-Smith Anastasia , Hopson Betsy D.
Published: August 2024

OBJECTIVE

The transition from pediatric to adult care is challenging for patients and families with spina bifida (SB). Lifelong care relationships yield to new care environments that are typically larger, less personal, and less engaged with the nuances of SB care. Adolescence and young adulthood are often characterized by personal and psychological stresses due to factors independent of illness or chronic medical complexity. Surveys have demonstrated that transition is associated with uncertainty, anxiety, and elevated risk of adverse events for many SB patients. To help mitigate this, the authors developed a trial mentorship program between teen patients with SB and undergraduate/medical students. This study analyzes and presents the initial outcomes from this program.

METHODS

The authors created the Join, Unite, Motivate, and Prepare (JUMP) program to improve readiness for the transition process. The mentee target population was patients aged 13–19 years receiving care at the authors’ SB clinic. Mentors were screened/approved undergraduate/medical students who volunteered to participate and successfully completed online training in mentorship. Upon enrollment, each patient set a combination of clinical, self, and parent/guardian goals using the individualized transition plan. These goals were shared with the mentor, mentee, parent/guardian, and physician. To monitor success, the SB program director routinely met with each mentor to discuss progress made and areas of growth. These included continuous quantitative and qualitative goal setting and failures that needed to be addressed for each agenda.

RESULTS

Thirteen mentor-mentee matches were created over 9 months. Of the 13 matches, 6 had more than 5 communications after the initial meeting, and 1 mentor-mentee match is still in contact today. Noted success in the program has been through mentees gaining employment, applying for scholarships, starting college, and connecting with others who are going through similar circumstances. Challenges have arisen through failure to follow-up after the initial office visit, risk with using the virtual platform, and wide geographic dispersion of both mentors and mentees across the authors’ state.

CONCLUSIONS

Transition from pediatric to adult care for adolescents with SB has proven to be a large hurdle. Easing this process through well-thought-out, interactive processes has the potential to improve readiness, increase patient autonomy, and provide exposure to the adult healthcare community. However, the mentorship model, in the SB setting, has not proven to be the remedy.
Online healthcare transition resources for pediatric neurosurgical care: supporting the journey of individuals living with spina bifida
Authors: Malhotra Anjali , Locastro Mary M. , Castillo Heidi , Lozano-Ramirez Juan Francisco , Gandy Kellen , Bradko Viachaslau , Lai Grace Y. , Castillo Jonathan
Published: August 2024

OBJECTIVE

In the global environment in which neurosurgical providers practice, there is a pressing need to identify and highlight online resources to support families shifting from pediatric to adult-centered spina bifida (SB) care in general and neurosurgical care in particular. The purpose of this paper was to identify high-quality resources for clinicians and families of individuals affected by SB to be utilized during the transition years. With knowledge of, and access to, these online resources, neurosurgical providers can aim to make the transition process effective, to improve the quality of care for young adults with SB.

METHODS

All identified online resources were found on the GOT TRANSITION platform and by searching "spina bifida transition resources" between January and March 2024. Resources were coded for transition focus areas and stratified into predefined categories: 1) education for clinicians, 2) preparation for youth and families, 3) educational/school, and 4) employment and independent living.

RESULTS

A total of 160 websites were cataloged; 11% of websites focused on medical provider education, 44% on preparation for youth, 29% on educational/school resources, and 16% on employment and independent living.

CONCLUSIONS

In the global environment of today’s medicine, online transition resources are available to assist clinicians and families in the transition process of individuals living with SB. With improved knowledge and utilization of online transition resources, neurosurgical providers can better serve individuals with SB and their families to improve quality of care with the aim of improving lifelong outcomes.
3-(2-Methylphenyl)-2-selenoxo-2,3-dihydroquinazolin-4(1H)-one and Its Complex with Cd(II): Synthesis and Molecular and Crystal Structures
Authors: Askerov R. K. , Chipinskii E. V. , Peregudov A. S. , Osmanov V. K. , Matsulevich Zh. V. , Borisova G. N. , Khrustalev V. N. , Smirnova O. N. , Magerramov A. M. , Borisov A. V.
Published: August 2024

The reaction of methyl anthranilate with 2-methylphenyl-iso-selenocyanate in boiling absolute ethanol affords a new compound: 3-(2-methylphenyl)-2-selenoxo-2,3-dihydroquinazolin-4(1Н)-one (HL). Free ligand HL, which is selone, is preliminarily transformed into the corresponding sodium selenolate [C15H11N2OSeNa] (I), which is then used without isolation in the reaction with cadmium chloride. This reaction leads to the formation of complex [Cd2(μ-L)2(L)2(C2H5OH)2] (II). The structures of the compounds are determined by X-ray diffraction (XRD) (CIF files CCDC nos. 2142342 (НL) and 2246014 (II)) and NMR spectroscopy (1Н, 13С, 15N, and 77Se). In the crystal, the molecules of HL form one-dimensional chains due to H…O and H…Se contacts and alternate in the syndiotactic order. Compound II is the centrosymmetric binuclear complex [C64H56Cd2N8O6Se4]. The cadmium atoms in complex II are hexacoordinated by two chelate anionic ligands L–. According to the NMR data, in a DMSO-d6 solution free ligand HL has the selone structure, whereas in cadmium complex II this ligand exists in the selenolate form, which is consistent with the XRD data on the crystal structures of the compounds.
Insect ocelli: ecology, physiology, and morphology of the accessory visual system
Authors: Severina I. Yu. , Novikova E. S. , Zhukovskaya M. I.
Published: August 2024

The peripheral photoreceptor system of adult insects and insect larvae of hemimetabolous insects consists of a pair of compound facet eyes and several simple chamber eyes, the ocelli. The origin of the ocelli is attributed to the simple eyes of crustacean larvae; the ocelli, along with the compound eyes, present the basic plan of the photosensitive system of insects. The evolution of these light-sensitive organs is closely related to flight, allowing to maintain the position of the body in relation to the horizon, they have high sensitivity and fast signal processing, which is critical for small animals easily carried away by air currents. In low light conditions, ocelli increase in size and in some cases also increase light sensitivity through light-reflecting tapetum, loss of polarization sensitivity and color separation. When light intensity is reduced below a critical level, such as in cave dwellers, ocelli disappear. In actively moving diurnal insects, ocelli can acquire polarization sensitivity, features of object vision, and several, mostly two, spectral types of photoreceptors. The high speed of the ocellar visual system is ensured by a small number of synaptic connections projecting to motor circuits.
Қоршау құрылымдарындағы жылу өткізгіш қосындылары
Authors: Мусабаев Т. , Есенгабулов С. , Жаркенова Г. , Жаркенов Е. , Темиргалиева А.
Published: August 2024

Ғимараттың жылу шығынын азайту және нормативтік құжаттардың талаптарын қанағаттандыру мақсатында соңғы жылдары құрылыста көп қабатты қоршау құрылымдары соның ішінде құрылымның ішіне жылу оқшаулағыш қабатын орналастыру кеңінен қолданылады. Экономикалық пайымдаулардың әсерінен ғимарат қабаттарының негізгі түрлерінің бірі қабаттар арасында тиімді оқшаулаумен кірпішпен қапталған ұялы бетон блок қалау болды. Қоршау құрылымдарының қолданыстағы түрлерін модернизациялауды және көптеген жаңа құрылымдардың пайда болуын ескере отырып, мұндай құрылымдардың термофизикалық қасиеттерін (негізінен термиялық қорғаныс) дұрыс анықтау туралы мәселе туындады.
Температура біркелкі бөлінеді, өйткені құрылымның беткі қабатына таралатын жылу бөлмеге қараған кезде олардың мәндерін теңестіруге көмектеседі. Алайда, температура өрісінің бұрмалану аймағының ұзындығы артады (кедергі болуына байланысты). Керісінше, температураның төмендеуі (қоршаудың қысқа ұзындығына дейін созылады) құрылымның жылы бетінде орналасқан қосындылар мен қосындылар арқылы тікбұрышты болып, айтарлықтай және көрнекті болады.
Әр түрлі типтегі жылу өткізгіш қосындылар аймағындағы температураның таралуының осындай ерекшеліктері панельдік қабырғаларға арналған тиісті жобалық шешімдері бар ғимараттарды пайдалану тәжірибесімен расталады. Егер панельдердің буындарындағы қабырғалар жылы жағынан жылу өткізгіш қорғаныш және әрлеу қабатымен жабылған болса, қабырғаның ішкі бетіндегі температураның таралуы біркелкі болады; жеткілікті қалың және жылу өткізгіш қабат болмаған кезде буын маңындағы температураның айқын төмендеуі байқалады.
Implementasi Cloud Computing Pada Prediksi Tingkat Kualitas Udara Berbasis Internet Of Things
Authors: Rivangga Satya , Yanuarti Rosita , Nilogiri Agung
Published: August 2024

Jumlah unit kendaraan bermotor di Kabupaten Jember selalu terjadi peningkatan selama tahun 2018 hingga 2020 yang dapat membuat kualitas udara memburuk sehingga dapat mengganggu kesehatan masyarakat saat beraktivitas pada ruang publik terbuka. Permasalahan yang terjadi adalah Kabupaten Jember masih belum memiliki alat pemantau kualitas udara di tempat-tempat tersebut sehingga masyarakat tidak tahu kualitas udara saat di tempat tersebut. Penelitian ini bertujuan untuk membuat perangkat Internet of Things (IoT) yang dapat mengukur polutan udara (CO, PM10, PM2.5) lalu menampilkan kualitas udara berdasarkan perhitungan Indeks Standar Pencemar Udara (ISPU) pada ruang publik terbuka tersebut melalui panel P5 dan perangkat tersebut dapat terintegrasi dengan layanan cloud computing supaya data sensor dapat tersimpan dan diolah untuk menghasilkan prediksi nilai ISPU polutan udara. Auto Machine Learning (AutoML) memungkinkan pengembang membuat model Machine Learning tanpa perlu membuat kode program. Penelitian ini menggunakan Auto Machine Learning (AutoML) dari Vertex AI milik Google Cloud Platform untuk membuat model forecasting. Model forecasting digunakan untuk memprediksi nilai ISPU polutan udara pada pukul 07:00:00 – 07:30:00. Berdasarkan penelitian yang telah dilakukan yaitu pengujian model forecasting yang dilakukan sebanyak dua kali gagal memberikan output forecasting dengan menggunakan dataset polutan udara yang diambil pada 20 Desember 2023 pukul 06:00:00 - 08:00:00. Sedangkan pada implementasi sistem perangkat IoT dapat menghitung nilai ISPU dan kategori ISPU berdasarkan konsentrasi nilai polutan dan data tersebut dapat tersimpan di Google Cloud Storage serta data tersebut dapat di tampilkan di panel P5. Selain itu diperoleh informasi berdasarkan data polutan udara bahwa semakin bertambahnya waktu maka nilai polutan akan semakin berkurang.
Implementasi Kombinasi LOPCOW dan Operational Competitiveness Rating Analysis Dalam Rekomendasi Tempat Wisata Indoor
Authors: Setiawan Gde Denny , Octaviansyah Pasaribu A. Ferico
Published: August 2024

Indoor attractions offer an exciting and comfortable holiday experience, especially for those who want to avoid extreme weather or want indoor comfort. The selection of indoor attractions is often faced with various problems involving distance, price, rating, and cleanliness. All these factors must be carefully considered to ensure that the chosen indoor attraction can provide a satisfying and enjoyable experience. The application of a combination of Logarithmic Percentage Change-Driven Objective Weighting (LOPCOW) and Operational Competitiveness Rating Analysis (OCRA) in the performance evaluation of business alternatives offers an innovative and robust approach to decision making. LOPCOW allows objective determination of criteria weighting based on logarithmic percentage changes, emphasizing the dynamics of relative performance changes between criteria. Integration with OCRA, which evaluates operational competitiveness through efficient ratio analysis. The ranking results showed that the first best rank was obtained by Puncak Mas with a final value of 1.2596, the second-best rank was obtained by Wira Garden with a final value of 1.1607, the third best rank was obtained by Lampung Walk with a final value of 1.0289. The combination of these two methods increases the accuracy and reliability of ranking results, assisting decision makers in choosing truly superior alternatives based on relevant and up-to-date data. By utilizing data-driven analysis and robust methodologies, the decision-making process becomes more efficient and can be done faster, saving time and resources.
The English lesson plan on the topic “The destroying lies of fast fashion: the price we pay”
Authors: Slobozhenko Ruslan , Slobozhenko Maiia
Published: August 2024

This work is an English lesson scenario which raises the burning issue in the world today and entails a set of various assignments for students at the B2-C1 level at English lessons. The learning materials help students improve their language skills which include listening, speaking, and reading activities, get students interested in discussing the matter of fast fashion, what causes it and what it can lead to and how it impacts us and the environment, and engage students in organizing active usage of language material as well as enhance vocabulary acquisition and retention effectively. The special attention is paid to the lexis related to the topic and its peculiarities.
Characteristics of collection winter barley samples according to the main economically valuable traits and properties
Authors: Doroshenko E. S. , Dontsova A. А.
Published: August 2024

Relevance. The problem of improving the gross harvest of barley grain in the country and its stabilization can be solved by developing qualitatively new, highly productive varieties and introducing them into production. To develop winter barley varieties that meet the modern requirements of domestic agricultural producers, a wide range of sources of economically valuable traits and properties is of great necessity. The purpose of the research is to evaluate the collection samples of winter barley in different weather conditions in the years and identify the most adapted to local meteorological and soil conditions for use in the breeding process. Methods. The study was carried out in the research crop rotation conducted by the department of barley breeding and seed production of the FSBSI «ARC “Donskoy”» (2021–2023). The objects of the study were 134 varieties of local and foreign breeding. Sowing was carried out at the optimal time for the area in a single repetition. According to the study results, there were identified new sources to increase productive head, grain size, grain weight per head, grain content in a head, productivity, quality indicators of grain (protein percentage in grain and lysine content in protein), as well as sources of early maturity, which are recommended for introduction into hybridization programs. Results. During the years of research, a positive effect on the yield of 1000 grains was found to an average degree (r = 0.46 ± 0.00), lodging resistance (r = 0.32 ± 0.00) and the number of productive stems per 1 m2 (r = 0.33 ± 0.00).
Methods of multivariate analysis in estimation of the new prospect strawberry selections
Authors: Yakovenko V. V. , Lapshin V. I.
Published: August 2024

Relevance. The demand for new genotypes with their higher characteristics of yield and quality of berries, stably bearing fruit and resistant to abiotic and biotic stresses, determines the development of breeding research on strawberries. The introduction of new varieties with their improved characteristics makes it possible to increase production efficiency and the quality of berries. The purpose of the study is a comparative assessment of new elite forms of strawberries with the most common and zoned varieties in the North Caucasus region based on the characteristics of productivity and quality of the berry. Methods. The work was carried out during 2021–2023. 9 new strawberry genotypes were compared with 3 zoned varieties introduced in the North Caucasian region according to four traits: number of berries, pcs/ bush; average berry weight, g; density of berry pulp, g; yield, g/bush. The traits were collected in accordance with the methodological recommendations adopted in the Russian Federation. The graphical scattering of the studied samples is revealed the hybrid forms, distinguished by the best combinations of the traits of productivity and fruit size and also density of berry pulp and fruit size compared to control varieties. The principal components method and statistical procedure for hierarchical cluster analysis of the studied samples based on a complex of traits made it possible to identify 4 groups among the studied strawberry genotypes, which significantly differ between themselves in the values of the studied traits. Results. As a result of the research, promising forms were identified for further breeding work and production practice: selections 20-17-15 Onda × Elizabeth II, 16-8-18 Belrubi × Syria, 17-3-15 Nelli × Syria and 25-11-15 Nelly × Syria.
Forecast distribution of technologies for processing pig and poultry manure in the Russian Federation to take measures for GHG reduction
Authors: Briukhanov A. Yu. , Shalavina E. V. , Vasiliev E. V.
Published: August 2024

Relevance. Greenhouse gas emissions have been one of the most important problems in recent years. Their main source in the agricultural sector of the Russian Federation is the processing of animal by-products. In 2021, emissions amounted to 121,285 thousand tons of CO2-eq. The purpose of the study is to establish how the technologies for processing pig manure and chicken manure are distributed in various natural and climatic conditions of the Russian Federation. Methods. The data of surveys of pig and poultry breeding complexes were analyzed, reflecting the amount of manure (manure) formed, broken down by humidity and storage volumes in storages; types of manure collection and storage systems; the ratio of their use in federal districts combined into three zones, taking into account natural and climatic characteristics. Based on the results of the analysis, the basic (according to the data of 2021) and forecast (for 2025) distribution of technologies for processing pig manure and chicken manure were obtained. Methane and nitrous oxide emissions from processing systems were calculated for zone 3, where there were significant differences between the baseline and forecast distributions of technologies. Direct emissions of nitrous oxide and methane in terms of CO2 equivalent in the regions of this zone, according to the National Cadastre, amount to 752.4 thousand tons per year; when calculated based on updated data on the basic distribution of technologies (2021) — 1038 thousand tons per year; when calculated on the basis of updated data on the projected distribution of technologies (2025) — 1110 thousand tons per year. Results. The results of the study showed the need to review the practice of using manure (manure) processing technologies to reduce greenhouse gas emissions.
Cultural and physiological characteristics of Sinorhizobium fredii strains selected by the All-Russian Scientific Research Institute of Soybean and their ability to produce vitamins В9 and В12
Authors: Yakimenko M. V. , Tatarenko I. Yu. , Sorokina A. I.
Published: August 2024

Relevance. Microorganisms that stimulate plant growth (PGPB), including rhizobia, improve plant productivity through various physiological, molecular and biochemical effects. Of the above factors, the role of vitamins has been studied to a lesser extent. For assessing the ability of rhizobia to produce vitamins В9 и В12, Sinorhizobium fredii strains were selected, which represent a homogeneous group and had good and abundant biomass growth on various nutrient media. Methods. The cultural and physiological properties of the strains were studied using generally accepted laboratory microbiological methods. Passages of collection strains of rhizobia and the study of various properties of these bacteria were carried out on nutrient media MDA and MRS, and on production nutrient media RM and TY produced by HIMEDIA company (India). Determination of the sensitivity of S. fredii strains to antibiotics was carried out using the disc diffusion method. The content of vitamins B9 and B12 in the bacterial mass of rhizobia was determined by the chemiluminescent immune method with the use of paramagnetic particles, and by applying immunochemical Access systems, on the chemiluminescence analyzer Access2. Results. It was found that the studied strains S. fredii have good or abundant growth of bacterial mass on nutrient media MRS, MDA, RM and TY. They are catalase-positive, have high and medium resistance to antibiotics. The highest concentration of vitamin B9 in biomass was synthesized by strains SB-39 (75.0 pg/ml), BB-49 (66.6 pg/ml) and TB-488 (48.9 pg/ml), and vitamin B12 — by strains BB-49 and SB-39 (1500 pg/ml).
Current state and problems of development of the agro-industrial complex of the Russian Federation in the context of economic security
Authors: Ulybina L. V.
Published: August 2024

Relevance. The agro-industrial complex, for a number ofreasons, occupies an important place in the domestic economy. Its defining role in ensuring the food security of the state, as well as its intersectoral nature, which determines the fact that the success of the functioning of industries related to the agro-industrial complex is largely determined by its condition, brings the issues of sustainable development of the agro-industrial complex and ensuring the protection of its economic interests to a number of the most important national problems. This circumstance serves to actualize research in the mentioned subject area and indicates the need for their intensification. Methods. In the course of the work, general logical and empirical methods of analysis, synthesis, analogy, formalization, generalization and comparison were used. Results. According to the results of the study, it was concluded that the rate of increase in the level of depreciation of fixed assets in the agricultural sector remains lower than in the national economy as a whole, however, they also show negative dynamics. This circumstance indicates that the modernization of the material base of the agricultural sector is taking place at an unsatisfactory pace. One of the important reasons for the low pace of development of the Russian agro-industrial complex is the low level of domestic effective demand for the goods produced by it. The decline in the share of the Russian Federation in the global gross value added of agriculture indicates the emerging lag in the development of the national agro-industrial complex and the active substitution of products previously produced by it by the countries of the eastern region (India, China), which in the medium term can negatively affect the level of food security in Russia.
Analysis of the supply of tractors in the agricultural sector of the Kaluga region economy
Authors: Kuznetsova L. V. , Lavrov A. V.
Published: August 2024

Relevance. The machine and tractor fleet of the region›s farms is designed to ensure that all mechanized work is performed with high quality and within a reasonable time frame with the lowest possible operating costs, with a high annual operating time for each tractor and uniform employment of machine operators during field work. If the number of machine and tractor fleets is insufficient, the agrotechnical deadlines for completing field work are violated and, accordingly, the yield of agricultural crops decreases while the quality of products decreases. Methods. The research was carried out in accordance with the methods of A.Y. Izmailov, V.P. Elizarov, N.M. Antyshev, Ya.P. Lobachevsky, V.G. Shevtsov, V.M. Beilis, E.V. Zhalnin, etc. Results. During the calculations carried out, it was found that in the agricultural sector of the Kaluga region there was a shortage of wheeled tractors (959 units) and tracked tractors (303 units). The actual availability of tractors per 1000 hectares of arable land is 7.36 fl units, which is 27.2% lower than the standard indicator (10.1 fl units). The availability of tractors in these units is 72.8%. The energy supply (hp) per 1000 hectares of arable land is 952.9 hp, or 78.6% of the norm (1,212 hp). 63.4% of the available tractors are beyond the depreciation period, their average age is 2 times higher than the depreciation period and is 17 years.
Determination of the genetic value of animals of breeding groups for custom mating in the population of the red-mottled breed
Authors: Popov N. A. , Shchegolkov N. F.
Published: August 2024

The significant indicators of the leading part of cows and bulls-producers of the Voronezh population have been studied and assessed. Indicators of the genetic value of traits in the population of cows (A) and breeding bulls (B) were calculated using the results in the calculated models. Cows of breeding groups of three farms were evaluated. An analysis of the register of breeding stock of breeding bulls revealed their critically small composition and relatively long-ago birth (2003–2008). There was a need for rotation and mandatory construction of their own genealogical structure of the red-mottled breed. The leading group of cows exceeded the breeding stock of the region in milk yield by 863 kg of milk, by 0.02% in terms of fat mass and 24 kg in live weight. The analysis of the breeding characteristics of the estimated and qualitytested offspring of breeding bulls was carried out. There was a gap in the dates of birth of the estimated breeding bulls and young ones, as well as the level of indicators of their mothers, which are inferior in milk yield according to parental indices by 3111 kg, and in the mass fraction of fat — by 0.25%. The requirements for the indicators of repair bulls have been increased. Indices of the genetic value of breeding bulls in the population (B) increased from 5764 kg of milk in previously estimated to 8051 kg in tested offspring quality, and by the mass fraction of fat — by 0.037%. The index of genetic value in cows has increased significantly, which surpassed the indicator of the main producing bulls. The parental indices of Holstein bulls selected in the group of “bull fathers” were 13,712–11,129 kg in milk yield, 4.34–4.85% in fat mass fraction, 3.32–3.52% in protein mass fraction.