bluuebunny/crossref_metadata_2025 huggingface dataset:
Evaluation of Some Thermophysical Properties of SN500 Lubrication Oil Blended with SIO2, AL2O3 and TIO2 Nano-Additives, Using Fuzzy Logic
Authors: E Sankar , K Duraivelu
Published: July 2024

Nano-additives are generally blended with the base lubricant oil, to enhance the lubricant characteristics such as wear, coefficient of friction (CoF), thermal conductivity, density, and flash and fire points of the lubricant. In this research, nano-additives of SiO2, Al2O3 and TiO2 are blended with the base SN500 oil with different proportions of mixture. When these three nanoparticles are used together in base oil, they enhance most of the desirable properties of a lubricant; 27 samples with three different levels of a mixture of nano-additives are identified using factorial design of experiments. The experimental outcomes for the selected three characteristics of interest of density, flash point and fire point are determined. Conducting experiments for ‘n’ number of samples with different proportions of mixture of nano-additives is a cumbersome, expensive and time-consuming process, in order to determine the optimum mix of nano-additives for the desirable level of characteristics of interest. In this research, attempt has been made to apply fuzzy logic to simulate a greater number of samples with different proportions of a mixture of three nano-additives with the respective outcomes of characteristics of three thermophysical properties. Out of the numerous samples simulated using fuzzy logic, the sample with the optimum mix of three nano-additives of SiO2, Al2O3 and TiO2 blended with the base oil is identified for the desirable level of characteristics of interest of density, flash point and fire point. The values of the identified sample are found to be at the desirable level of 0.9008 gm/ml, 231°C and 252°C, respectively.
Phenomenal Intentionality and the Temporal Shape of Experience
Authors: Stratman Christopher M.
Published: July 2024

This paper argues for the claim that the mental ontology required for what has been called the “Phenomenal Intentionality Theory” (PIT) should be understood in terms of mental events or episodes, not mental states that instantiate phenomenal properties because the former but not the latter has a kind of temporal shape. I begin by laying out the basic commitments of PIT. I then introduce the notion of “temporal shape” and defend the following simple but powerful argument: (1) If conscious experiences are phenomenal mental states that instantiate phenomenal properties, then the phenomenal character of these experiences will lack a temporal shape. (2) The phenomenal character of conscious experience typically has a temporal shape. (3) Therefore, conscious experiences are not mental states that instantiate phenomenal properties.
Morphological and Molecular Analysis of Two Mycophagous Nematodes, Aphelenchoides bicaudatus and A. rutgersi (Nematoda: Aphelenchoididae) from Florida Strawberry
Authors: Oliveira Clemen J. , Subbotin Sergei A. , Desager Johan A. , Dahlin Paul , Vau Silvia , Inserra Renato N.
Published: July 2024

From 2016 to 2021, nematode surveys in Florida strawberry fields revealed several species of foliar nematodes (Aphelenchoides spp.). Aphelenchoides besseyi sensu stricto was detected only in 2016 and 2017 on photosynthetic strawberry leaves/buds, but other not well characterized populations of Aphelenchoides sp. were found on declining/dessicated leaves. Morphological analyses showed that these samples of Aphelenchoides sp. consisted of A. bicaudatus, a species detected in Florida for the first time, and A. rutgersi, a species previously reported in Florida from the citrus rhizosphere. These two species differed from A. besseyi in the shape of their tail terminus: bifurcate in A. bicaudatus; mucronate with a ventral thin mucro in A. rutgersi; and stellate in A. besseyi. One population each of these species was used for morphological and molecular analyses after being reared on Monilinia fructicola. Body and tail length differences were observed among Florida A. bicaudatus and other populations from the Far East and South Africa. Phylogenetic analyses of the rRNA gene sequences showed that Florida A. bicaudatus grouped with those of species from South Korea, Taiwan, and the Netherlands and several other populations listed as Aphelenchoides sp. from Brazil, Costa Rica, and Japan, which were considered as representatives of A. bicaudatus in this study. Similarly, sequences of Florida A. rutgersi grouped with those from environmental samples in Japan and North Carolina, which were listed as Aphelenchoides sp. and were considered as representatives of A. rutgersi in this study. Photosynthetic strawberry leaf samples were free from both A. bicaudatus and A. rutgersi, indicating that these two species did not damage strawberry. They were associated with desiccated leaves and/or propagative stolons, usually infected by fungi, confirming that they are mycetophagous under field conditions in this study. Results of soybean leaf inoculation on moist filter paper containing A. bicaudatus specimens showed that this species could become phytophagous under artificial conditions. Nematodes penetrated the leaf epidermis and migrated into the mesophyll causing leaf tissue discoloration/necrosis, which remained localized within the infested area. Soybean leaf damage was almost negligible, and no nematode reproduction was observed in the inoculated soybean areas.
Normativity in Languaging and Practical Activity
Authors: Gahrn-Andersen Rasmus
Published: July 2024

The paper explores some of the commonalities between language and practical activity. It focuses on the normativity involved and presents an account on two different kinds of normativity which constrain both languaging and practical doings in general. In this connection, the paper engages with the first-order—second-order distinction central to the Distributed Language Perspective and shows that there is a way for proponents of this perspective to come to terms with linguistic normativity without presupposing a dualism between, on the one hand, first-order articulations and, on the other, the second-order normative constrains that condition them.
An opportunity missed is an opportunity lost. Flood maps and their (non-)utilization by local government bodies in the Czech Republic
Authors: Klemešová Kamila Dolák , Andráško Ivan , FIedor David , Dolák Lukáš
Published: July 2024

Flood maps are a crucial component of integrated flood risk management. While their key role is commonly acknowledged by experts and scholars, however, literature and findings on the practical utilization of flood maps (including the user’ experiences) within the processes of governance are scarce. Our study aims to contribute to closing this gap; by focusing on the Czech local government bodies, data collected through a questionnaire survey allowed us to examine (a) how, or whether at all, the officials employ flood maps in their agendas; (b) how do they experience and assess working with the maps; and (c) which data would they supplement the extant flood maps by. Our findings show that the praxis of local flood-related governance in the Czech Republic still largely neglects the up-to-date approaches and practices of flood risk management. The officials addressed mostly continue to rely on the earliest type of floodplain maps and purely technical aspects of floods, while largely omitting the newer flood danger and risk maps; thus, they are also missing the opportunities of applying multi-criteria assessment of the flood risk and more effective communication with the public. The paper concludes with a set of suggestions for relevant praxis and future research.
The Role of Coaching in University Start-Up Creation: A Study of Students from Badji Mokhtar Annaba University
Authors: Afif Hana , Belaid Mohamed Mouloud , Radu Valentin
Published: July 2024

This research paper addresses a central problem: how coaching assists university students in launching startups and transitioning into entrepreneurs. This study aims to analyze to what extent coaching contributes to helping university students start their own projects at the level of the faculty of Economics, Commerce, and Management. The study's findings highlight several key points, the most important of which is that coaching has become a path to follow, especially since it led students to adopt an entrepreneurial orientation, which also allowed them to dissipate their fear and talk about their ideas for their project. Moreover, coaching made it possible to realize the talents enabling the student to innovate in a project/create a start-up. However, the study also identifies certain shortcomings, the most important of which is that the training did not help some students to prepare their first model, and it is, therefore, advisable to subsequently train a specialized coach for each student and that he starts with him from the beginning until his idea came to fruition on the ground.
Karakteristik Pengguna Perjalanan di Kecamatan Kuta Alam, Kota Banda Aceh
Authors: Zula Zayyan Zuhra , Fuady Zahrul , Yusuf Myna Agustina
Published: July 2024

Pemilihan moda transportasi berbeda-beda berdasarkan tingkat kepuasan yang difasilitasi oleh masing-masing moda transportasi. Trans Koetaradja merupakan   salah satu angkutan umum yang menjadi pilihan masyarakat di Kota Banda Aceh. Keberadaan bus Trans Koetaradja yang kurang diminati pelaku pergerakan memicu meningkatnya penggunaan kendaraan pribadi, khususnya sepeda motor. Kecenderungan yang terjadi dalam pemilihan moda transportasi, masyrakat lebih memilih pada kendaraan yang mampu meminimumkan waktu dengan biaya yang murah. Pemilihan moda juga dipengaruhi oleh karakteristik pengguna transportasi itu sendiri. Penelitian ini bertujuan untuk mengetahui bagaimana karakteristik pengguna perjalanan di Kecamatan Kuta Alam. Hasil penelitian ini menunjukkan bahwa karakteristik pengguna perjalanan yang ada di Kecamatan Kuta Alam didominasi oleh mahasiswa yang memiliki pendapatan di bawah Rp.1.000.000 dengan rentang usia 15 – 24 tahun yang berjenis kelamin dominan perempuan. Adapun rentang waktu pergerakan yang dipilih oleh pengguna ialah pada jam06.00 – 08.00 WIB yang mana waktu tersebut merupakan jam yang digunakan untuk melakukan aktivitas ke kampus untuk berkualiah ataupun bekerja menuju ke kantor. Dari hasil tersebut diketahui hanya terdapat satu variabel yang berpengaruh secara signifikan terhadap pemilihan moda, yaitu variabel Waktu Tempuh. Maka, didapatkan hasil bahwa probabilitas pemilihan moda sepeda motor sebesar 55%. Sedangkan pemilihan moda Trans Koetaradja sebesar 45%.
Perancangan Escape Building Tsunami di Kecamatan Baitussalam, Aceh Besar dengan Pendekatan Tema Regionalisme Arsitektur
Authors: Shafwa Putroe , Haiqal Muhammad , Putra Riza Aulia
Published: July 2024

Peristiwa gempa bumi dan tsunami Aceh yang terjadi pada 26 Desember 2004 mengakibatkan kerusakan dan kerugian serta kehilangan nyawa sekitar 200.000 jiwa. Upaya mitigasi terhadap resiko bencana tsunami mulai dilakukan setelah peristiwa tersebut, salah satunya pembangunan dan peningkatan tempat evakuasi sementara (TES) berupa Escape Building Tsunami pada wilayah rawan tsunami. Berdasarkan hasil observasi, di Banda Aceh telah disediakan empat titik fasilitas dan Aceh Besar hanya memiliki satu titik fasilitas di Kecamatan Peukan Bada dengan kondisi bangunan tidak terawat dan terbengkalai. Berdasarkan titik pole tsunami (tugu air tsunami), Kecamatan Baitussalam, yang merupakan wilayah yang terkena dampak tsunami terparah di Aceh Besar dan dapat dikategorikan sebagai daerah yang memerlukan fasilitas mitigasi bencana belum memiliki Escape Building Tsunami. Maka dari itu, perancangan Escape Building Tsunami pada daerah Baitussalam diperlukan. Perancangan Escape Building Tsunami akan dilakukan dengan menerapkan konsep regionalisme arsitektur yang bertujuan untuk menggambungkan konsep tradisional dan modern. Konsep ini menciptakan karakteristik baru dengan penekanan pada perancangan dalam merespon iklim, pola perilaku sekitar, pola kebudayaan dan ikenografis (simbol) sehingga menghasilkan identitas dan simbolik dari bentukan bangunan, tantanan masa, dan bahan material yang digunakan.
Konsep Perancangan Apartemen di Kota Banda Aceh dengan Pendekatan Arsitektur Tropis
Authors: Sabrina Alya Rizki , Haiqal Muhammad , Edytia Muhammad Heru Arie
Published: July 2024

Banyak penduduk yang datang dari berbagai tempat melakukan urbanisasi ke Kota Banda Aceh dalam upaya mencari kesempatan baru untuk pekerjaan atau pendidikan yang lebih baik. Hal ini menjadi tantangan untuk menyediakan hunian yang sesuai dengan pendatang baru, di mana pilihan membeli rumah acapkali menjadi pilihan yang tidak realistis. Oleh karena itu, pembangunan hunian secara vertikal atau apartemen dapat menjadi solusi alternatif untuk menyediakan tempat hunian yang dapat disewakan dalam jangka waktu pendek. Perancangan apartemen ini dilakukan dengan memilih tapak yang sesuai dan strategis yang berlokasi di jalan Teuku Moh. Hasan. Perancangan apartemen ini memiliki tujuan untuk menciptakan lingkungan hunian yang terpadu dengan beberapa tipe kamar hunian seperti Tipe Studio, Tipe 2 Bedroom, hingga Tipe 3 Bedroom, serta dilengkapi dengan fasilitas-fasilitas pendukung berupa kolam renang, jogging track, basketball court, tennis court, playground, hingga gym. Hunian apartemen ini juga diharapkan dapat memberikan kenyamanan bagi para penggunanya dengan metode zonasi yang disesuaikan dengan site, metode perancangan dengan pendekatan arsitektur tropis, penyesuaian ruang dalam dan luar serta pemilihan struktur yang diperhitungkan sesuai kondisi lahan dan bentuk rancangan sehingga rancangan ini dapat membangun kota menjadi lebih maju dan berkembang melalui perwujudan hunian yang dapat membuat kehidupan penduduk lebih berkualitas.
Pendekatan Arsitektur Kontemporer pada Perancangan Pusat Riset dan Pengembangan Industri Kreatif di Banda Aceh
Authors: Ariqa Shausan , Idawati Dyah Erti , Ridwan Nasrullah
Published: July 2024

Saat ini, kehadiran Ekonomi Kreatif di Kota Banda Aceh belum tercatat secara resmi, namun sudah berkembang dengan cukup baik melalui empat sub sektor yaitu fashion, film, kriya dan kuliner. Dari keempat sub sektor yang ada, sangat dibutukan upaya peningkatan potensi ekonomi di kota ini. Hal ini diharapkan agar dapat menjadikan Kota Banda Aceh memiliki tingkat perekonomian yang tinggi dan stabil. Dengan beragam isu dan potensi yang ada, maka perancangan Pusat Riset dan Pengembangan Industri Kreatif yang memadai sangat diharapkan dapat menyelesaikan permasalahan yang ada serta dapat juga dijadikan sebagai wadah berkumpulnya para pelaku bidang Industri Kreatif di Banda Aceh. Lokasi perancangan yang berada di Jl. Taman Sri Ratu Safiatuddin Bandar Baru, Kec. Kuta Alam, Kota Banda Aceh, Aceh ini diharapkan mampu memberikan penguatan citra dan identitas dari Kota Banda Aceh sendiri. Penerapan konsep Arsitektur Kontemporer melalui bentuk massa bangunan yang dinamis dan eksplorasi lanskap serta pengaplikasian bentuk yang melengkung pada fasad bangunan diharapkan mampu mempresentasikan ciri khas anak muda yang aktif, dinamis dan menyukai hal-hal baru sehingga dapat memvisualisasikan bangunan dari view luar dan lingkungan setempat dengan maksimal.
PELATIHAN STRATEGI PEMASARAN DAN PENGEMASAN PRODUK UMKM UNTUK MENINGKATKAN PEREKONOMIAN MASYARAKAT DI KECAMATAN KAMANG MAGEK KABUPATEN AGAM
Authors: Viarani Suci Oktri , Akbar Addin , Sardani Rizaldi , Mufti Wahyu Fitrianda , Ramadian Demi
Published: July 2024

One of the cassava processing businesses that are mostly carried out by the community in Agam Regency, especially in Kamang Magek District is making cassava crackers or better known as Kerupuk Kamang. This cassava crackers business is usually managed by the Home Industry or Small and Medium Industry groups. The marketing process currently carried out is by selling the production of cassava crackers to traditional markets and local distributors, besides that the cassava crackers sold are still in the form of kilos and do not have attractive packaging so that the selling price of cassava crackers is lower. This has an impact on the profits obtained by MSME in the Kamang Magek District, Agam Regency to be small. So that in order to get more profit or income, these MSME must be able to develop marketing and packaging of their products so that more markets can be reached. For this reason, it is necessary to provide briefing/counseling on how to carry out a good marketing strategy, in addition to providing knowledge related to the packaging process that can attract the attention of consumers. As a result of this activity, the community gained new insights regarding good marketing strategies to increase revenue and attract customers, such as making products of various flavors, using product labels/product brands, attractive packaging, promotions with social media and P-IRT permits.
PENGGUNAAN CULTIVATOR POWER WEEDER SEBAGAI PENGENDALI GULMA SECARA MEKANIS PADA TANAMAN SAYURAN
Authors: Hasanuddin Hasanuddin , . Jauharlina , Agustina Raida , Munawar Agus Arip
Published: July 2024

Farmers in Lieue Village, Darussalam District, Aceh Besar still use the handweeding method to control weeds in vegetable crops. This method takes a long time, making the weed control process less effective. In addition, the small amount of labor is not proportional to the area of vegetable crops, so the weed control method is less efficient. To overcome this, the partner community is offered a solution to the mechanical weed control method, namely by using a cultivator power weeder. The weed control tool offered is an engine-driven tool mounted on an iron frame with two iron wheels equipped with blades that function as soil cultivators and weed cutters. When the machine is turned on and running, the soil will be processed while cutting weeds and controlling weeds. The cultivator power weeder offered is an innovation developed by the Weed Management Laboratory of the Agrotechnology Study Program and the Agricultural Equipment and Machinery Laboratory of the Faculty of Agriculture, Syiah Kuala University. It is hoped that with this weed control tool, the weed control process in vegetable crops can be more effective and efficient and ultimately can increase the yield of vegetable crops of farmers in Aceh Besar. The results of the service showed that the service team had succeeded in making a power weeder cultivator as a mechanical weed controller using a driving machine. However, the tool that has been made turns out to be rather difficult to move. Therefore, wheels were added to the front to make it easier to move. This tool can be used for weed control in horticultural and food crops. To date, farmers have tried and used the power weeder cultivator as a mechanical weed controller to control weeds in vegetable crops in various target villages.
Socio-Environmental Management and The Applicability of The Sustainability Tripod For Integration Between Economic, Social and Environmental Practices
Authors: Pereira Antônio Marcos de Jesus de Souza , Pupio Elizamar Gomes da Silva , Nascimento Maria Gabriela do , Oliveira Maira Danuse Santos de , Chagas Samaira Cristina Souza , Bernardy Tatiane Atanásio dos Santos , Bonomo Brunno , Cruz Mauro César Cardoso , Araújo Nícolas Matheus da Fonseca Tinoco de Souza , Silva Francisco Marcos Sousa da , Branco Francisca Amália Castelo
Published: July 2024

Objective: The objective of this research was to analyze the applicability of the sustainability tripod as a management mechanism to integrate environmental, economic and social practices into organizations.
 
Methodology: The research was conducted through an integrative review, which involved the search, selection and analysis of scientific articles on sustainable business management. Databases such as Google Academic and SciELO were used. During the search process, inclusion criteria were applied, selecting only Brazilian scientific articles, in Portuguese language, complete, free, associated with the research theme and published between the years 2020 and 2023.
 
Results and analysis: As a result, four scientific articles were selected for analysis. The articles addressed several aspects related to sustainable business management, highlighting the importance of the sustainability tripod as a mechanism to integrate environmental, economic and social practices into organizations. The studies examined showed how companies in different industries are adopting this model to promote sustainable practices in their operations. The analysis of the studies revealed that the application of the sustainability tripod as a management mechanism is fundamental to promote a more conscious and sustainable business management. By balancing environmental, economic and social practices, organizations not only achieve their business goals, but also contribute to the well-being of society and the preservation of the environment.
 
Conclusion: Therefore, it is concluded that the effective integration of the sustainability tripod into business practices is fundamental not only for the long-term success of organizations, but also for the progress towards a fairer, equitable and environmentally conscious society.
Artificial Intelligence for Sustainability: A Systematic Literature Review in Information Systems
Authors: Siqueira Manoel Brod , Santos Vanessa Martins dos , Diniz Eduardo Henrique , Cruz Ana Paula Alves
Published: July 2024

Objective: It is vital to investigate how technologies benefit or impair sustainable development. This review aimed to provide updated literature on Artificial Intelligence (AI), in explicit connection with sustainability.
 
Theoretical Framework: This article performs a systematic literature review of information systems (IS) journals on AI employment in promoting sustainable development (SD).
 
Method: Among 331 articles, 97 have been identified in the Scopus and Web of Science databases from 2017 to 2022 focusing on the AI use for environmental, economic, legal political, organizational, and social development.
 
Results and Discussion: According to the findings, the identified areas of interest and respective papers were associated with the corresponding concepts and summarized. These studies point to the role of AI in supporting decision-making and reveal research avenues in information and communication technologies (ICTs) and SD. The authors also propose a framework correlating the concepts with the 17 Sustainable Development Goals (SDGs).
 
Research Implications: The practical and theoretical implications of this research were discussed, providing insights into how the results can be applied or influence practices in the field of ICTs and SD.
 
Originality/Value: The relevance and value of this research are evidenced by highlighting the contributions research in the IS field has made regarding AI for SD since 2017. As a step forward in this literature review, the authors suggest a research agenda for the IS field.
The Establishment of Village Regulations in the Context of Village Democratization
Authors: Neta Yulia , Budiyono Budiyono , Firmansyah Ade Arif , Evendia Malicia
Published: July 2024

The enactment of Law Number 6 of 2014 concerning Villages introduces a distinct dimension to the democratization process within villages, emphasizing recognition and subsidiarity that portrays villages not merely as geographic entities but as integral parts of their socio-cultural communities. Currently, the formulation of village regulations as a manifestation of village autonomy remains a stagnant process. This article aims to critically examine the development of village regulations within the framework of village democratization, employing doctrinal research methods alongside statutory and conceptual approaches. Findings reveal that village regulations constitute a subset of statutory regulations, incorporating provisions from higher-level frameworks while embodying community participation grounded in village-specific authority and rights. The transformation prompted by Law Number 6 of 2014 enhances the scope for village democratization, influencing the formulation of regulations that must meet both substantive and procedural requirements, thus presenting villages with opportunities and challenges in realizing local democratization effectively.
Kaposiform hemangioendothelioma: case report
Authors: Geraldo Alessandra , Simoni Andrea
Published: July 2024

Kaposiform hemangioendothelioma is considered a benign vascular tumor, with locally invasive characteristics and histological similarity to Kaposi sarcoma. It is related to complications with varying degrees of morbidity and mortality. The definitive diagnosis is made by histological examination and the treatment course can be either surgical or drug therapy, which varies according to patients clinical indication. The aim of the research is to publish a case of Kaposiform Hemangioendothelioma admitted to a pediatric hospital in Santa Catarina, in 2022. Clinical, epidemiological and laboratory data were obtained by consulting the patients medical record; the reported case data were compared with what is described in the current literature about the disease, discussing their similarities and differences and, finally, confirming the diagnosis, through the anatomopathological exam. Despite the fact of little knowledge between physicians and pediatricians, Kaposiform Hemangioendothelioma is a disease of relevance in the medical field, since its differential diagnoses are the most common vascular tumors of childhood, infantile hemangioma and congenital hemangioma. The purpose of the study is to describe a Kaposiform Hemangioendothelioma case and alert health care professionals the recognition of diseases signs and symptoms and the need to carry out a differential diagnosis in such patients.
دور الامم المتحدة في العراق منذ العام 2014
Authors: ا.م.د مصطفى ابراهيم سلمان
Published: July 2024

اهتمت الأمم المتحدة بالعراق، وتعاملت مع جميع تطوراته السياسية والأمنية والاقتصادية والاجتماعية والثقافية، وما يؤكد هذا الاهتمام وجود بعثتين رئيستين هما يونامي ويونيتاد فضلاً عن العديد من الوكالات الفرعية، والكل لديها برامجها المخصصة، ووضعت لها خطط عملت على تنفيذها، كما وضعت الأمم المتحدة مجموعة من الأهداف سعت الى تنفيذها في العراق، وهذا يعكس بلا شك الأهمية الكبيرة التي حظي بها العراق لدى الأمم المتحدة.
A novel low-cost device for tool targeting training and microsurgical hand tremor assessment
Authors: Bykanov Andrey , Kiryushin Maxim , Trube Maxim , Rastvorova Olga , Ilia Chernov , Pitskhelauri David
Published: July 2024

Background:

The spatial accuracy of microsurgical manipulations is one of the critical factors in successful surgical interventions. The purpose of this study was to create a low-cost, high-fidelity, and easy-to-use simulator for microsurgical skills training, which can be made by residents themselves at home.

Methods:

In response to the COVID-19 pandemic, we created a device for spatial accuracy microsurgical skills training and implemented it in our resident’s training program. We propose a design for basic and advanced models. The simulator consisted of commonly available products.

Results:

A low-cost, durable, and high-fidelity basic model has been developed at a total cost of <10 dollars per unit. The model allows trainees to practice the critical microsurgical skills of tool targeting in a home-based setting.

Conclusion:

The developed device can be assembled at an affordable price using commercially available materials. Such simulation models can provide valuable training opportunities for microsurgery residents.
Successful stent-assisted coil embolization for a recurrent distal posterior inferior cerebellar artery aneurysm: A case presentation
Authors: Tsuboki Shimpei , Imaoka Yukihiro , Todaka Tatemi
Published: July 2024

Background:

Distal posterior inferior cerebellar artery (PICA) aneurysms are exceedingly rare intracranial aneurysms. In the acute phase of rupture, interventions commonly involve parent artery occlusion through endovascular treatment or direct trapping surgery. There is no consensus on the best treatment of chronic ruptured or unruptured aneurysms, and stent-assisted coil embolization has not yet been reported in the chronic phase of rupture.

Case Description:

We present a case of a 46-year-old female with a recurrent distal PICA aneurysm at 18 months following the initial treatment for subarachnoid hemorrhage and was treated by stent-assisted coil embolization with Neuroform Atlas (Stryker, USA), with a favorable outcome.

Conclusion:

Distal PICA aneurysms occur at the apical curvature, where primitive arterial anastomoses existed during development, pointing to the potential vulnerability of the vessel wall at these sites. Stent-assisted coil embolization has shown effectiveness in preserving the parent artery for chronic ruptured and unruptured distal PICA aneurysms. Nonetheless, the narrowness and tortuosity of the PICA present obstacles to treatment. In our case, the procedure was feasible utilizing the Neuroform Atlas (Stryker, USA) with the Transcell approach. A thorough grasp of the characteristics of stents and their application is pivotal for achieving effective treatment outcomes.
Intraoperative goal-directed fluid therapy in neurosurgical patients: A systematic review
Authors: Kutum Chayanika , Lakhe Prashant , Ghimire Niraj , BC Anil Kumar , Begum Uzma , Singh Karandeep
Published: July 2024

Background:

Perioperative fluid management is critical in neurosurgery as over perfusion can lead to brain edema whereas under perfusion may lead to brain hypoperfusion or ischemia. We aimed to determine the effectiveness of intraoperative goal-directed fluid therapy (GDFT) in patients undergoing intracranial surgeries.

Methods:

We searched MEDLINE, Cochrane, and PubMed databases and forward-backward citations for studies published between database inception and February 22, 2024. Randomized controlled trials where intraoperative GDFT was performed in neurosurgery and compared to the conventional regime were included in the study. GDFT was compared with the conventional regime as per primary outcomes – total intraoperative fluid requirement, serum lactate, hemodynamics, brain relaxation, urine output, serum biochemistry, and secondary outcomes – intensive care unit and hospital length of stay. The quality of evidence was assessed with the Cochrane risk of bias tool. This study is registered on PROSPERO (CRD42024518816).

Results:

Of 75 records identified, eight were eligible, the majority of which had a low to moderate risk of overall bias. In four studies, more fluid was given in the control group. No difference in postoperative lactate values was noted in 50% of studies. In the remaining 50%, lactate was more in the control group. Three out of four studies did not find any significant difference in the incidence of intraoperative hypotension, and four out of six studies did not find a significant difference in vasopressor requirement. The majority of studies did not show significant differences in urine output, brain relaxation, and length of stay between both groups. None found any difference in acid base status or electrolyte levels.

Conclusion:

GDFT, when compared to the conventional regime in neurosurgery, showed that the total volume of fluids administered was lesser in the GDFT group with no increase in serum lactate. There was no difference in the hemodynamics, urine output, brain relaxation, urine output, length of stay, and biochemical parameters.
Improving Hydraulic Fracturing Performance in the Yuzhno-Priobskoye Field through Judicious Selection of Stimulation Targets
Authors: Шагалеев Р.К. , Гареев А.М. , Гуторов Ю.А.
Published: July 2024

Рассмотрены преимущества и недостатки ГРП, проводимых на различных месторождениях ООО «Газпромнефть-Хантос». Предложены варианты решений для достижения оптимальных показателей работы скважин после ГРП, получены количественные критерии оптимизации ГРП на скважинах Южно-Приобского месторождения обеспечивающие рентабельную добычу нефти

Advantages and disadvantages of hydraulic fracturing treatments conducted in various fields of Gazpromneft-Khantos are considered. Solutions are proposed to achieve optimal post-frac production performance. Quantitative criteria of hydraulic fracturing optimization are obtained for the wells in the Yuzhno-Priobskoye field
Reservoir characterization of UV-1 productive formation with dynamic analysis of seismic wave field
Authors: Салимов Ф.С.
Published: July 2024

Впервые в Когалымском регионе на Повховском месторождении проведены работы по выделению зон субвертикальной деструкции, берущие начало с пород фундамента и простирающиеся до отложений нижнего мела. Проведен динамический анализ сейсмического волнового поля, полученного посредством 3Д сейсморазведки, с проработкой 16 атрибутов. Уверено выделены зоны повышенной трещиноватости и разуплотнения пород, приуроченные к различным типам тектонических нарушений как связанных с выступами отдельных блоков фундамента, так и не связанных. Определена слоистая, микроклиноворменная структура пласта ЮВ-1. Полученные данные позволяют по новому взглянуть на продуктивные верхнеюрские отложения, пересмотреть подходы к формированию систем разработки залежей нефти, планированию геолого-технических мероприятий и поисково-разведочным работам.

The Povkhovskoye field is the first field in Kogalym Region where operations have been performed to identify zones with near-vertical discontinuities which are deep-seated in the basement and cut across up-section to the Lower Cretaceous. Dynamic analysis of the seismic wave field identified from 3D seismic survey was carried out with derivation of 16 different attributes. Zones of intense fracturing and decompaction were identified related to various types of faults that are attributed to uplifted basement fault blocks as well as not associated with such basement highs. The stratified wedge-shaped architecture of UV-1 reservoir was observed. The findings lead to new understanding of the Upper Jurassic formations and their productivity, and give grounds to review the approach to planning reservoir development and management, as well as selecting targeted production enhancement operations and exploration activities.
Calibration of friction pressure losses during hydrofrac
Authors: Салимов О.В. , Насыбуллин А.В. , Салимов В.Г.
Published: July 2024

В статье изложена методика импульсной закачки жидкости разрыва для калибровки потерь давления на трение в трубах. Приведен пример использования методики. Даны рекомендации по применению импульсной закачки

The paper considers the method of fracture fluid pulse injection to allow for calibration of friction pressure losses. A case study is analyzed; recommended practice is presented
Development and testing of heavy oil viscosity reducer
Authors: Шарифуллин А.В. , Байбекова Л.Р. , Шарифуллин В.Н. , Дусметова Г.И.
Published: July 2024

Изложено исследование перспективных способов для улучшения реологических свойств высоковязких нефтей - химическая обработка присадками. Разработана присадка, снижающая динамическую вязкость нефти. Одним из компонентов для синтеза присадки был выбран побочный продукт нефтехимического производства - низкомолекулярный полиэтилен низкого давления.

This paper presents analysis of promising techniques to improve heavy oil rheology, more specifically, application of chemical additives. An additive has been developed which reduces oil dynamic viscosity. A petrochemical by-product - high-density low-molecular-weight polyethylene - is used as one of the additive synthesis components.
Geological and production aspects of extensively fractured carbonate reservoirs
Authors: Хамидуллина А.Н. , Яминова Л.Н.
Published: July 2024

Отложения карбонатного комплекса залежей 301-303 представляют особую сложность для разработки в связи с развитой системой вертикальной и горизонтальной трещиноватости и наличием зон разуплотненных коллекторов. Выполненный анализ опытно-промышленных работ на залежах показал, что наиболее эффективным из апробированных методов разработки залежей остается бурение горизонтальных и наклонно направленных скважин, несмотря на то, что в настоящее время многие вопросы по снижению темпов обводнения горизонтальных скважин являются нерешенными

Carbonate reservoirs of the Deposits 301-303 present specific development challenges due to a well-developed system of vertical and horizontal fractures and presence of deconsolidation zones. During pilot testing of various production practices, horizontal and directional drilling proved most efficient although many water production problems in horizontal wells remain unresolved
Application of horizontal drilling and hydraulic fracturing to enhance low-permeability carbonate reservoir performance
Authors: Низаев Р.Х. , Шавалиев М.А. , Идиятуллина З.С. , Арзамасцев А.И. , Музоваткина Е.Н.
Published: July 2024

Развитие технико-экономической эффективности разработки может быть достигнуто за счет применения оптимального комплекса геолого-технических мероприятий, подобранного по критериям применимости для конкретных геолого-физических условий выбранных залежей нефти и особенностей их разработки. Эффективными способами поддержания рентабельных уровней добычи нефти в коллекторах с ухудшенными физическими свойствами являются вскрытие продуктивных пластов скважинами с горизонтальным окончанием (СГО) с двумя и более забоями и применение на них гидроразрыва (ГРП) или гидрокислотного ГРП (ГКРП).

Carbonate reservoir performance can be improved through an optimum program of production enhancement operations based on screening criteria considering specific reservoir conditions of selected fields. One of the most efficient ways to maintain commercial oil production from poor quality reservoirs is drilling of multilateral horizontal wells and application of hydraulic fracturing or acid fracturing techniques.
Aqueous solutions of zwitterionic surfactants as a reagents for oil displacement
Authors: Аль-мунтасер А.А.М. , Шарипов Р.Р. , Мингазов Р.Р. , Башкирцева Н.Ю.
Published: July 2024

Изложены результаты исследований перспективности применения водных растворов цвиттер-ионных ПАВ в качестве реагентов для вытеснения нефти. Были проведены исследования поверхностно-активных свойств, реологических свойств и адсорбционной и нефтевытесняющей способности на насыпных моделях. В результате проведенных испытаний установлено, что исследуемые цвиттер-ионные ПАВ обладают стойкостью к высокой минерализации пластовой воды, образуют вязкоупругие водные растворы и обладают высокой поверхностной активностью.

The paper presents the research data on viability of applying aqueous solutions of zwitterionic surfactants as oil displacement agents. Surface-active properties and flow characteristics, adsorption and oil displacement capacity have been investigated using sand-pack models. According to research results, zwitterionic surfactants exhibit good salt tolerance ability, form viscoelastic aqueous solutions, and have high surface activity.
A Downhole Device for Implosive Stimulation of Injection Wells without Long Shutdown Periods
Authors: Арсланова Л.З. , Гуторов А.Ю.
Published: July 2024

В работе показывается влияние кольматации ПЗП нагнетательных скважин на технологическую эффективность повышения нефтеотдачи пластов, основанное на закачке в объект нагнетания воды, содержащей различные концентрации химических или биологически активных веществ, предназначенных для повышения её охватывающе-вытесняющих свойств. Предлагается совместить процесс нагнетания в пласт воды с содержащимися в ней компонентами с одновременной имплозионной обработкой его ПЗП, с непрерывным контролем приемистости пласта с помощью глубинного устройства, предназначенного для имплозионной обработки ПЗП в нагнетательных скважинах без их длительной остановки

This paper discusses the effect impact of formation damage in injection wells on viability of enhanced oil recovery methods which involve injection of water with varying content of chemical or bioactive substances added to improve sweep efficiency and displacement efficiency. Water containing various additives is suggested to be injected simultaneously with implosive stimulation of injection wells without long shutdown periods and with continuous water intake control using a downhole repeated implosion device.
Determination of the best time for application of selected eor technique
Authors: Арсланова Л.З. , Гуторов А.Ю. , Гареев А.М.
Published: July 2024

Работа описывает метод, предусматривающий иную стадийность разработки, на основании которой возможно выбрать наиболее подходящий на конкретной стадии разработки метод увеличения нефтеотдачи, руководствуясь графиком динамики величины среднего дебита по годам. Предлагается новый подход, основанный на непрерывном контроле за динамикой изменения продуктивности скважины и сравнении его с эталонным графиком, полученным расчетным путем. Показано, что графическое построение позволяет своевременно приступать к осуществлению необходимого метода увеличения нефтеотдачи пласта

This paper reviews a new approach to oil production staging which enables selecting the best EOR technique for a certain stage of field development based on the average annual production rate curve. This new approach involves continuous monitoring of well productivity history and benchmarking against a calculated reference curve. Plotting of well productivity curves facilitates timely implementation of the selected EOR method
Marker technologies in oil production
Authors: Денисламов И.З.
Published: July 2024

Реперные технологии в нефтедобыче подразумевают наблюдение за движением пластовой жидкости в объеме продуктивного пласта, а также жидкостей в скважинах и трубопроводах с помощью регулируемого изменения свойств этих жидкостей. На сероводородсодержащих нефтяных месторождениях предложено использовать в качестве индикатора сероводород, рассмотрен баланс сероводорода до и после установки предварительного сброса воды. Образование АСПО в скважинном оборудовании и трубопроводах системы нефтесбора значительно осложняет деятельность многих НГДУ, требует оперативного применения известных и новых технологий. Приведенные в статье технологии количественной диагностики отложений базируются на известных законах теплотехники и гидравлики, а также современных достижениях подземной телеметрии.

Marker technologies as applied to oil production imply monitoring reservoir fluid flow within the productive reservoir as well as the flow of fluids in wells and pipelines by means of controlled changes in the properties of these fluids. For sulfur-containing oil fields, hydrogen sulfide is recommended for use as the indicator. The balance of hydrogen sulfide is considered upstream and downstream of the preliminary water discharge unit. Buildup of asphaltene, resin and paraffin deposits in downhole equipment and oil-gathering pipelines impedes the production performance considerably and requires prompt response with application of well-established and emerging technologies. The techniques for quantitative diagnostics of such deposits, presented in this paper, are based on well-known heat engineering and hydraulic principles, as well as recent advances in subsurface telemetry.
Geosteering method aids drilling into bypassed zones in the interwell space
Authors: Габзалилова А.Х. , Гуторов А.Ю. , Гарифуллина З.А. , Гуторов Ю.А.
Published: July 2024

В работе рассматривается способ геонавигации бурильного инструмента оснащенного MWD телесистемой на основе электромагнитного канала связи на целик нефти в межскважинном пространстве, положение которого точно установлено с помощью метода глубинного электрического зондирования становлением поля в ближней зоне с дневной поверхности. В процессе наведения забоя скважины на целик нефти осуществляется регистрация электромагнитного сигнала генерируемого MWD телесистемой с помощью наземной установки ЭЗС-Б с последующей выработкой управляющих команд, предназначенных для корректировки его траектории в направлении целика нефти в межскважинном пространстве, координаты которого определены с её помощью

The paper reviews the geosteering method for directing a drill string provided with MWD system based on electromagnetic communication channel to drill into bypassed zones in the interwell space. The exact location of bypassed oil is determined by a deep resistivity probe. While targeting the bottom hole of a well to the bypassed zone, electromagnetic signals generated by MWD telemetry system are recorded using a specialized surface facility which further generates output control signals aimed at adjusting borehole trajectory to reach bypassed oil in the interwell space
The study of buffer liquids for improving the quality ofwellcasing
Authors: Агзамов Ф.А. , Галимов И.М. , Аль-Сельви М.
Published: July 2024

Одним из основных способов достижения надежного разобщения пластов является подготовка скважины к принятию цементного раствора. С этой целью применяются буферные жидкости, основная задача которых полное вытеснение бурового раствора из затрубного пространства и обработки поверхности обсадной колонны и стенки скважины для лучшего сцепления с цементом. Буферные и промывочные жидкости служат для повышения степени вытеснения бурового раствора из затрубного пространства, приведения обсадной колонны и стенок скважины в смачиваемое водой состояние (без углеводородов) и отделения буровых растворов от цементного раствора. В статье приводятся результаты лабораторных исследований по определению отмывающей способности буферных жидкости по отношению к различным буровым растворам с целью сравнения их эффективности. Исследования проводилось по методике оценки эффективности буферных жидкостей (Cementing Engeneering Manual 2.B.5. Surfactant Selection (Dec.2002) Schlumberger) на экспериментальной установке (OFITE MODEL 900) в условиях моделирующих скважные.
Relevance of consolidating scientific engineering potential of the Volga-Kama division of RANS - "it's time to gather stones"
Authors: Гуторов Юлий Андреевич , Идиятуллин Равиль Мутугулович
Published: July 2024

В статье приводятся сведения из «Программы энергетической безопасности России до 2030 года», в которых акцентируется внимание на невыполнение её основных показателей касающихся Приволжского федерального округа. Особое внимание авторы обращают на недостаточно высокий КИН, по которому российские нефтяные компании уступают зарубежным. Также авторы приводят данные характеризующие низкую эффективность мероприятий направленных на добычу трудноизвлекаемых запасов и рост стоимости услуг сервисных компаний, который существенно отражается на себестоимости добываемой нефти. Авторы отмечают, что одной из причин недостаточной эффективности добычи ТРИЗ является отсутствие системного подхода к решению этой проблемы со стороны как, научно-исследовательских так и сервисных предприятий и иллюстрируют это, приводя статистику тематики научных докладов и дипломных проектов специалистов ПАО Татнефть и ОАО ТАТНИПИнефть опубликованных в 2016 году и посвященных решению актуальных проблем разработки нефтяных месторождений на поздней стадии эксплуатации

This paper presents information from the Russian Energy Security Program by 2030, with a particular focus on failure to comply with its objectives over the Volga Federal District. The authors point out that oil recovery factor is not very high, being less than in foreign oil companies. They also give some data on low efficiency of unconventional-reserves production techniques and rise in cost of services provided by oilfield service companies, which greatly affects oil lifting costs. One of the reasons for low efficiency of unconventional-reserves development is lack of systematic approach to this problem, both from research and service companies. To support this idea, the authors refer to scientific papers and thesis projects by TATNEFT’s and TatNIPIneft’s employees, published in 2016. All these papers address current problems relating to mature oilfield development