bluuebunny/crossref_metadata_2025 huggingface dataset:
Estimation of the depth-domain seismic wavelet based on velocity substitution and a generalized seismic wavelet model
Authors: Zhang Jie , Chen Xuehua , Jiang Wei , Liu Yunfei , Xu He
Published: December 2021

Depth-domain seismic wavelet estimation is the essential foundation for depth-imaged data inversion, which is increasingly used for hydrocarbon reservoir characterization in geophysical prospecting. The seismic wavelet in the depth domain stretches with increasing medium velocity and compresses with decreasing medium velocity. The commonly used convolutional model cannot be directly used to estimate depth-domain seismic wavelets due to velocity-dependent wavelet variations. We have developed a separate parameter estimation method for estimating depth-domain seismic wavelets from poststack depth-domain seismic and well-log data. Our method is based on the velocity substitution and depth-domain generalized seismic wavelet model defined by the fractional derivative and reference wavenumber. Velocity substitution allows wavelet estimation with the convolutional model in the constant-velocity depth domain. The depth-domain generalized seismic wavelet model allows for a simple workflow that estimates the depth-domain wavelet by estimating two wavelet model parameters. In addition, this simple workflow does not need to perform searches for the optimal regularization parameter and wavelet length, which are time-consuming in least-squares (LS)-based methods. The limited numerical search ranges of the two wavelet model parameters can easily be calculated using the constant phase and peak wavenumber of the depth-domain seismic data. Our method is verified using synthetic and real seismic data and further compared with LS-based methods. The results indicate that our method is effective and stable even for data with a low signal-to-noise ratio.
Hydrologic changes of in-situ gravimetry
Authors: Zhang Min , Liu Ziwei , Wu Qiong , Teng Yuntian , Zhang Xiaotong , Du Feibai , Jiang Ying
Published: December 2021

Inter-seasonal and geodynamics-related gravity changes are important geoscientific signals that are extractable from gravimeter observations after removing background information as local hydrology gravity effect. With two superconducting gravimeters (SGs: OSG-053 and iGrav-007) located in different tectonic units, continuous global navigation satellite system data and absolute gravity observations, Wuhan, China, is an ideal location for investigating the effects of gravity resulting from significant local hydrology mass variations. We have processed approximately 26 months of gravity data collected from the SGs in Wuhan and obtained residuals of [Formula: see text] for OSG-053 and [Formula: see text] for iGrav-007. The hydrological observations indicate an estimated gravity increase of [Formula: see text] near iGrav-007, which mainly results from an increase in unconfined water level with an aquifer-specific yield of approximately 0.1. However, the gravity changes around OSG-053 are mainly from soil moisture and reach −[Formula: see text]. The soil type, thickness, and water content parameters are obtained from hydrogeological surveys and drilling data. The deep confined water level rises by 2.5 m, which introduces a [Formula: see text] gravity variation with a specific storage approximately 0.00001 from the field unsteady-flow pumping test. The modeled gravity is approximately [Formula: see text] around OSG-053 and [Formula: see text] around iGrav-007, in accordance with the observed gravity variations. The difference in gravity changes between the two SG observations can be explained by different local water storage environments. Our results suggest that unconfined and soil water significantly impact the in-situ gravimetry, and that further detailed hydrogeological surveys are required. A combined investigation of gravity and water levels can be a useful approach for monitoring aquifer storage conditions and groundwater management.
An enhanced accuracy method to determine oil saturation by carbon/oxygen logging in tight reservoirs
Authors: Zhang Feng , Fan Jilin , Qiu Fei , Xie Bing , Li Xianghui , Zhang Hui
Published: December 2021

The low porosity and permeability characteristics of tight oil reservoirs have brought challenges to monitoring oil saturation recently. Although carbon/oxygen logging is effective for oil saturation evaluation, the statistical fluctuations of the measured energy spectrum in tight reservoirs make it impossible to distinguish the different signals between oil and water. Thus, noise adjusted singular-value decomposition (NASVD) is applied to denoise the raw energy spectrum and evaluate the oil saturation quantitatively. The energy spectrum matrix, which is composed of the energy spectrum of the measurement point and its adjacent depth points, is decomposed and reconstructed to remove noninformative signals and improve the signal-to-noise ratio of the raw energy spectrum. The parameter K evaluates the smoothness of the logging curves, reflecting the influence of the number of energy spectra and singular values on NASVD. Meanwhile, the NASVD, Savitzky-Golay filtering, and depth averaging methods are compared for calculating the accuracy of C/O, Si/Ca, and oil saturation with the Monte Carlo method, indicating that the NASVD is better than the other two methods for eliminating the statistical fluctuations of the raw energy spectrum. A simulation example indicates that the NASVD can control the calculation errors of tight reservoir oil saturation to within 15%, which significantly improves the accuracy of the estimated oil saturation. An oil field example indicates that the oil saturation interpretation result for tight reservoirs is in good agreement with the oil saturation from open-hole log analysis, signifying that the NASVD energy spectrum denoising method can provide a quantitative estimate of oil saturation in tight oil reservoirs.
A common-reflection-point gather random noise attenuation method based on the synchrosqueezing wavelet transform
Authors: Wang Xiaokai , Huo Zhizhou , Liu Dawei , Xu Weiwei , Chen Wenchao
Published: December 2021

Common-reflection-point (CRP) gather is one extensively used prestack seismic data type. However, CRP suffers more noise than a poststack seismic data set. The events in the CRP gather are always flat, and the effective signals from neighboring traces in the CRP gather have similar forms not only in the time domain, but also in the time-frequency (TF) domain. Therefore, we first use the synchrosqueezing wavelet transform (SSWT) to decompose seismic traces to the TF domain because the SSWT has better TF resolution and reconstruction properties. Then, we use the similarity of neighboring traces to smooth and threshold the SSWT coefficients in the TF domain. Finally, we used the modified SSWT coefficients to reconstruct the denoised traces for the CRP gather. Synthetic and field data examples indicate that our method can effectively attenuate random noise with a better attenuation performance than the commonly used principal component analysis, [Formula: see text] filter, and the continuous wavelet transform method.
Bubble vent localization for marine hydrocarbon seep surveys
Authors: Mitchell Garrett A. , Mayer Larry A. , Gharib Jamshid J.
Published: December 2021

Commercial success of marine seep hunting exploration campaigns involves acquisition of high-quality bathymetry and backscatter along with targeted coring of shallow geochemical sampling of seep sediments. The sharp lateral chemical gradient encompassing seafloor seeps requires accurate identification of seep sites from high-resolution acoustic data. Active seafloor seeps featuring plumes of gas bubbles and oil droplets rising into the water column can be imaged with modern multibeam echosounders providing an effective approach to remotely characterizing seafloor seeps. Interpreting the seafloor position of gas plume emissions in multibeam data using existing mapping methodology is hindered by slow processing due to large files sizes, a manual “by eye” qualitative assessment of each sonar ping searching for plume anomalies, skill and fatigue of the geoscientist, and environmental or acquisition artifacts that can mask the precise location of gas emission on the seafloor. These limitations of midwater backscatter mapping create a qualitative data set with varying inherent positional errors that can lead to missed or incorrect observations about seep-related seafloor features and processes. By vertically integrating midwater multibeam amplitude samples, a 2D midwater backscatter raster can be generated and draped over seafloor morphology, providing a quantitative synoptic overview of the spatial distribution of gas plume emission sites for more refined seafloor interpretation. We reprocess multibeam midwater data set from NOAA Cruise EX1402L2 in the northwestern Gulf of Mexico using a vertical amplitude stacking technique. Constructed midwater backscatter surfaces are compared with digitized plume positions collected during the survey for a comparison into assessing uncertainty in mapping approaches. Our results show that the accuracy of manually digitizing gas emission sites varies considerably when compared with the midwater backscatter amplitude maps. This quantitative plume mapping technique offers multiple advantages over traditional geopicking from cost effectiveness, offshore efficiency, repeatability, and higher accuracy, ultimately improving the detectability and sampling of active seafloor seeps through precisely located cores.
Guests’ Desire for Relational Closeness with Hosts: The Roles of Attachment Styles
Authors: Beldona Srikanth , Kher Hemant
Published: December 2021

Extant research is increasingly recognizing the importance of customer attachment styles in service settings because of its significance with regard to relationship marketing. This study examined the impact of guest attachment styles on the desire for relational closeness with hosts using perceived hospitality as a mediator of service evaluation. Findings show that guests with higher levels of attachment anxiety seek closer relationships with hosts, and those with higher levels of attachment avoidance spurn efforts towards relational closeness. Also, perceived hospitality mediates only the impact of attachment avoidance on the desire for relational closeness. Theoretical and practical implications are discussed.
Crafting Conscious Employee Engagement through Wellbeing: A Key Differentiator to Long-Term Organizational Success within the Hospitality Industry
Authors: Singh Veliath Poonam , Koppar Rashmi , Wankhar Varynia , Chawla Mathur Ritu
Published: December 2021

Discussions on pandemics that hit the human race have dominated the scientific research world, on the contrary, due to the developments in technology and globalisation the work environment has evolved into a complex space and for this reason, there is a wide research gap on how the workforce can get back to normal or cope with an ever-changing pandemic phenomenon. The objectives of the current paper are aligned to identify the impact of Covid-19 on different levels of the employees’ life, to analyse the effect on mental health and wellbeing, and to formulate a relationship between mindful employee engagement and its impact on organisational success. The current scenario requires the employees to continue working from home for the businesses to sustain themselves in the future. By reviewing 20 research articles, an understanding is developed of the remote-work model and its positive and negative impacts on employees as well as organisations. Using a semi-structured questionnaire to interview service industry professionals, data has been gathered. Using a semi-structured analysis the authors aim to illustrate the pandemic’s effects from the employees’ perspective. The researchers found three significant findings: loyalty to self-preservation, mindfulness to address mental health and improve performance and success of organisations during the pandemic depends on a purpose-driven culture.
Tourism Development and its Impacts in Shaheed Dweep of Andaman and Nicobar Islands: An Understanding from the Host Community Perceptions
Authors: Kumar Deka Seemanta , Baruah Rashmi
Published: December 2021

Tourism has both positive and negative impact on the host community. This paper tries to find out the perceptions of the host community towards tourism development and its impacts in Shaheed Dweep of Andaman and Nicobar Islands. A simple random household survey was conducted among 353 respondents of Shaheed Dweep to know about perceptions on two factors of impact: (i) Costs of Tourism Development and (ii) Benefits from tourism Development. An exploratory factor analysis (EFA) was applied for it. The findings reveal that tourism development has created lots of employment opportunities as one of the positive impacts but on the other side as a negative impact, it found that due to the seasonal nature it is creating more part-time job than full-time among the host community.
A Study on the Benefits of Sustainable Management Practices and its Association with Talent Retention in Star Category Hotels
Authors: Shende Kiran , Gumaste Rasika , Shah Gauri
Published: December 2021

Sustainable management encompasses ideas from sustainability and synthesizes them with the concepts of management. This paper focuses on studying the benefits related to sustainable management practices that are adopted and followed in the hotel industry with specific reference to Star Category Hotels of Pune Region and its association with retention of the talented employees in the organisation.The study had reviewed the practices adopted by star category hotels and its association with retaining the talented bunch of employees. The research design for these factors is then explained further, which is supported by a Chi-Square test as a tool of data interpretation. A structured questionnaire was circulated amongst the managerial level employees in star hotels of the Pune region and responses were collected. The study had revealed that employees do believe that parameters covered under the benefits of the talent retention are mutually beneficial for the organisation as well as the employees.
Multifunctional Leisure Organizations – The Future or a hype
Authors: Terzieva Liliya
Published: December 2021

Leisure has been undergoing a transformation that requires strategic design approaches open for imagination, inspiration and diverse organisational structure and behavioural models. The stakeholders within and the participants (not anymore defined just through the notion of consumers) have opened up the spectrum of what leisure could mean and sustain.This paper provides a detailed overview of the existence, essence and specifics of multifunctional leisure organizations, their principles and structures while relating them to two real-life cases from the Netherlands. Challenges, as well as future development scenarios, are presented and discussed.
Mental health issues related to climate change in Poland - Polish psychologists’ and psychotherapists’ perspective.
Authors: Gawrych Magdalena , Holka-Pokorska Justyna
Published: December 2021

Aim of the study

The aim of the first Polish pilot study was to conduct an initial analysis of the occurrence of mental issues related to such experiences as: fear, worry, sense of loss and grief in connection with climate change and ecology. The consequences of climate and environmental changes for physical health are increasingly well-documented. In contrast, psychosocial changes due to climate change and, in particular, the impact on mental health, remain unrecognized.

Subject or material and methods

Psychologists and psychotherapists were asked to share their clinical experience in diagnosing and treatment of patients reporting climate change-related mental symptoms. Climate change-related mental issues were operationalized as clinically significant symptoms meeting the criteria for anxiety and depressive disorders or adjustment disorders, and are known in literature as a solastalgia and ecological anxiety. The collection of data with the use of an on-line survey started lasted 4 months.

Results

Issues relating to ecology and climate change were present both in the contents of patient concerns (48.6% of respondents) and in patients’ hypotheses regarding their symptoms (16.7% of respondents, p <.001) in the past 6 months of the respondents’ clinical work. Mental health professionals considered psychoeducation (62.5%), psychological support (73.6%), short-term psychotherapy (45.8%) and self-help groups (40.3%) to be appropriate mental health support interventions.

Discussion

The presented study provides evidence that mental health issues related to climate change are recognized by Polish psychologists and psychotherapists. The professionals can need comprehensive knowledge of climate-related mental health, including appropriate interventions.

Conclusions

These findings may be a ground for designing further research on this topic.
CPD article: Felid lungworms: from complete strangers to major parasites
Authors: Colombo Mariasole , Traversa Donato
Published: December 2021

The parasitic nematodes Aelurostrongylus abstrusus, Troglostrongylus brevior and Capillaria aerophila affect the respiratory system of cats and are a primary cause of respiratory disease in cats in many countries. While they have been underestimated for a long time, in recent years academics and veterinarians have become more aware of their importance, and now felid lungworms are recognised as primary agents of respiratory disease. Therefore, timely diagnosis and treatment, and efficacious prevention methods are a priority in feline clinical practice. Recent data have unveiled many features of diseases caused by these nematodes, and this article reviews and discusses practical and clinical knowledge, as well as recent updates on clinical management of aelurostrongylosis, troglostrongylosis and capillariosis in cats.
CPD article: Puppy nutrition: weaning and beyond
Authors: Clark Susanna
Published: December 2021

In 2019 and 2020, and especially during the COVID-19 pandemic, the number of households owning dogs increased considerably, and many of these pets were new puppies acquired during the lockdowns in the UK. With such a rise in puppy ownership, it has never been more important to ensure that these puppies receive adequate nutrition throughout their weaning and growth periods, and beyond. In this article, the nutritional considerations of growing puppies will be discussed, along with current pet food trends and how to ensure puppies are receiving a complete and balanced diet.
CPD article: Guiding the owner: the use of supplements in canine osteoarthritis management
Authors: Lowe Robyn
Published: December 2021

Owners often reach for over-the-counter supplements for the management of canine osteoarthritis, believing them to be natural, side effect-free options. Some may ask for your opinion as a veterinary professional, whereas others will come to you already using certain products. It is imperative to be aware of the evidence for the relevant products and to encourage the use of good quality products as the first option. The aim should be to help prevent owners of arthritic dogs wasting their money buying multiple products with little or no evidence to back up their use, to be wary of bold unsubstantiated claims for improvements or health benefits, and to ensure that supplements are not used as a sole intervention for the management of arthritic pain, as they are unlikely to have the evidence base to support this claim.
Feline blood pressure measurement: when is it needed?
Authors: Caney Sarah
Published: December 2021

Systemic hypertension is a common disorder, primarily affecting older cats. Most cases are secondary to underlying medical conditions, such as chronic kidney disease. If left untreated, systemic hypertension has the potential to cause serious damage to certain target organs and can be fatal. Target organs include the nervous system, cardiovascular system, eyes and kidneys. Target organ damage to the eyes is often pathognomonic and is detected on ophthalmological examination in up to 80% of cats with systemic hypertension. Blood pressure measurement is essential in confirming a diagnosis and should be prioritised in cats showing evidence of target organ damage. Blood pressure screening of apparently healthy older cats is justified, since the risk of hypertension increases with age. Systemic hypertension is diagnosed in cats with persistent elevation in their systolic blood pressure of 160 mmHg or higher. Stress and anxiety can cause a transient increase in systolic blood pressure so measurements should be collected in a manner that is as calm and ‘cat friendly’ as possible. In the presence of confirmed target organ damage, a single high systolic blood pressure reading confirms systemic hypertension. Where no target organ damage is detectable, evidence of elevated systolic blood pressure on two or more occasions is needed to confirm the diagnosis.
Small animal Review
Authors: Sturgess Kit
Published: December 2021

This month's Small Animal Review summarises studies on the effect of surgical preparation solutions on body temperature in cats, the persistence of leptospires in canine urine following treatment outcomes of oesophageal stricture.
Book Review
Authors: Hargrave Claire
Published: December 2021

This Companion Animal Book Review from Claire Hargrave discusses the recently released second edition of Practical Canine Behaviour For Veterinary Nurses and Technicians by Stephanie Hedges, a UK-based Veterinary Nurse and Certified Clinical Animal Behaviorist with over 20 years experience working in the veterinary industry.
Dispersal of Phraortes illepidus (Phasmida: Phasmatidae) Eggs by Workers of the Queenless Ant, Pristomyrmex punctatus (Hymenoptera: Formicidae)
Authors: Toyama Yoshiyuki , Kuroki Izuru , Nakamura Keiji
Published: December 2021

Eggs of some stick insects bear external appendages called capitula. Foraging worker ants attracted by capitula disperse eggs in a response similar to the responses of workers to elaiosome-bearing seeds of many plants. For this study, we conducted rearing experiments in the laboratory to elucidate the interspecific relation between the queenless ant, Pristomyrmex punctatus Smith, and the stick insect, Phraortes illepidus (Brunner von Wattenwyl) of which eggs bear capitula. Eggs of P. illepidus were proposed to P. punctatus in the laboratory. Capitula were removed from most of the eggs not only when ants were starved but also when ants were well-fed. In large rearing containers, eggs were transported by ants from their place of origin. Many eggs were transferred horizontally on the surface. Although some eggs were found in the artificial ant nests, it is likely that stick insects are not in active ant nests at the time of hatching in nature because of P. punctatus nest-moving habits. The percentage of eggs buried in the sand was small. Furthermore, most of the buried eggs were found at less than 3 cm depth. Results show that many P. illepidus hatchlings can reach host plants safely without being attacked by ant workers. These results suggest that P. punctatus can be a good partner of P. illepidus. Ants disperse eggs of slow-moving stink insects in exchange for some nutrition from capitula.
(How) Will it end? A qualitative analysis of free-text survey data on informal care endings
Authors: Kirby Emma , Newton Giselle , Hofstätter Lukas , Judd-Lam Sarah , Strnadová Iva , Newman Christy E.
Published: December 2021

The health and social ‘after-effects’ of caring are well established, yet the way carers experience pathways out of caring remains under-researched. In this article, we analyse qualitative free-text responses (n = 1,746) from a national survey of Australian carers to explore current and former carers’ concerns, opportunities and preferences around care endings. Our thematic analysis derived three key findings: (1) anticipation and fears for the care recipient; (2) prospects for life after caring; and (3) responsibility, recognition and loss. We engage with scholarship on the moralities of caring to discuss carers’ precarious relational and social positions, and their uncertainties around how caring ends.
Severity assessment of single-dose Oxford-AstraZeneca vaccinated individuals infected with severe acute respiratory syndrome coronavirus 2 in Southeast Bangladesh
Authors: Rana Eaftekhar Ahmed , Dutta Pronesh , Islam Md. Sirazul , Nizami Tanvir Ahmad , Das Tridip , Chowdhury Sharmin , Das Goutam Buddha
Published: December 2021

Background and Aim: A vaccine program for coronavirus illness (coronavirus disease [COVID-19]) is currently underway in numerous regions of the world, including Bangladesh, but no health data on those who have been vaccinated are available at this time. The study aimed to investigate the health condition of people who had received their first dose of the Oxford- AstraZeneca vaccine and were infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

Materials and Methods: To detect SARS-CoV-2, a standard virological approach, real-time reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR), was used. Several health indicators from vaccinated patients were collected using pre-structured questionnaires during the infection phase.

Results: A total of 6146 suspicious samples were analyzed, and 1752 were found to be positive for SARS-CoV-2, with 200 people receiving the first dose of the COVID-19 vaccine. One hundred and sixty-five (82.5%) were not hospitalized among the vaccinated people, and 177 (88.5%) did not have any respiratory problems. Only 8% of patients required further oxygen support, and 199 (99.5%) did not require intensive care unit intervention. Overall, oxygen saturation was recorded at around 96.8% and respiratory difficulties did not extend more than 5 days during the infection period. Among the vaccinated COVID-19-positive people, 113 (56.5%) and 111 (55.5%) had typical physiological taste and smell. Surprisingly, 129 (64.5%) people had diverse comorbidities, with high blood pressure (27.9%) and diabetes (32 [24.8%]) being the most common. The major conclusion of the current study was that 199 (99.5%) of vaccinated patients survived in good health and tested negative for RT-qPCR.

Conclusion: According to the findings of this study, administering the first dose of the Oxford-AstraZeneca vaccine considerably reduces health risks during the COVID-19 infection period.
Categorization of Bacterial Pathogens Present in Infected Wounds and their Antibiotic Resistance Profile Recovered from Patients Attending Rizgary Hospital-Erbil
Authors: Al-Naqshbandi Ahmed A. , Hassan Hedy A. , Chawsheen Mahmoud A. , Abdul Qader Haval H.
Published: December 2021

Wound infection with antibiotic-resistant bacteria can extend a patients’ debility and increase the expense of treatment in the long term; therefore, careful management of patients with wound infections is necessary to avoid complications. The usage of antimicrobial agent is a major factor in resistance development. This study aims to understand the causes of wound infections, as well as the criteria for diagnosing them for more sensible antibiotic prescribing. Samples from 269 wound patients were collected, and cultured for bacterial growth. Gram stain technique, bacterial identification via VITEK 2 compact system were investigated in this study. Gram negative bacteria accounted for 59.15% of the total isolates, while pathogenic gram positive bacteria accounted for 40.85% of total isolates. Escherichia coli and Pseudomonas aeruginosa are the dominant pathogenic gram negative bacteria in wounds, while Staphylococcus aureus, and Staphylococcus epidermidis are the dominant pathogenic gram positive bacteria. Pseudomonas aeruginosa showed 100% resistance to the majority of antibiotic tested, including Ampicillin, Amoxicillin/Clavulanic Acid, Aztreona, Ceftriaxone, and others. Staphylococcus aureus and Staphylococcus epidermidis are 100% resistant to Ampicillin, Ceftriaxone, and Cefotaxime. For more efficient antibiotic prescriptions, the causative microorganisms, and their current susceptibility patterns need to be mandated for testing before prescribing any antibiotics to patients. Prescriptions are frequently based solely on general information about the antibiotic's function, rather than on individual response variation to the pathogen and the antibiotic. Particularly when the common pathogens in this study show multidrug resistance in wounds.
First Principle Calculations for Silver Halides AgBr, AgCl, and AgF
Authors: Taha Akram H.
Published: December 2021

Density functional theory (DFT) coupled with ) method are carried out to calculate the electronic structures of AgX (X; Br, Cl, and F). The effect of hybridizing between 4d orbital of Ag element and the p orbitals of the X in the valence band plays a very important role in the total density of states configuration. The electronic structure has been studied and all results were compared with the experimental and theoretical values. The importance of this work is that there is insufficient studies of silver halides corresponding the great importance of these compounds. Almost all the results were consistent with the previous studies mentioned here. We found the band gap of AgX to be 2.343 eV, 2.553 eV, and 1.677 eV for AgBr, AgCl, and AgF respectively which are in good agreement with the experimental results.
Kajian Potensi Bencana Kebumian Wilayah Kecamatan Ngombol, Kabupaten Purworejo, Provinsi Jawa Tengah
Authors: Zainun Zainun , Hidajat Wahju Krisna , Santi Narulita
Published: December 2021

Kecamatan Ngombol, Kabupaten Purworejo terletak di bagian selatan Provinsi Jawa Tengah yang merupakan salah satu wilayah rawan bencana. Sejak tahun 2008 hingga tahun 2018 terhitung sebanyak 125 kejadian bencana alam di Kabupaten Purworejo. Sebagai langkah awal meminimalkan dampak negatif dari potensi terjadinya bencana alam, dilakukan kajian dan pemetaan zonasi rawan bencana kebumian di daerah Kecamatan Ngombol. Penelitian dilakukan untuk mengetahui faktor-faktor yang berperan terhadap potensi bencana kebumian dan mengetahui zonasi tingkat rawan bencana kebumian di daerah tersebut. Penentuan zona rawan bencana kebumian menggunakan metode overlay dari skor tiap parameter masing-masing bencana.  Parameter zona rawan gempabumi meliputi kondisi geologi berupa pasir, kemiringan lereng terdiri dari datar hingga sangat curam, nilai intesitas gempa sebesar II MMI, dan jauh dari zona sesar. Hasil parameter zona rawan banjir berupa tanah aluvial untuk jenis tanah, kemiringan lereng terdiri dari datar hingga sangat curam, nilai curah hujan infiltrasi sebesar 3.245,93 mm.hari/tahun, penggunaan lahan berupa sawah, pemukiman, kebun, ladang, semak belukar dan pasir, nilai kerapatan sungai kurang dari 0,62 km/km2 hingga lebih dari 3,1 km/km2. Kecamatan Ngombol tergolong sebagai kawasan tipologi A untuk zona rawan gempabumi. Zona rawan banjir terbagi menjadi 3 kelas yaitu 2% zona tidak rawan, 47% zona cukup rawan dan 51% zona sangat rawan.
Potensi Reservoir Batupasir Formasi Ngimbang dan Interval Umur pra-Tersier Area Silaen-10, Sub-Cekungan Kangean, Cekungan Jawa Timur Utara
Authors: Silaen Michael , Aribowo Yoga , Setyawan Reddy
Published: December 2021

Salah satu cekungan sedimen yang telah banyak dilakukan kegiatan eksplorasi minyak dan gas bumi adalah Cekungan Jawa Timur Utara. Cekungan ini memiliki sistem petroleum yang kompleks dan berbeda-beda untuk setiap Sub Cekungan. Berdasarkan penilitian terdahulu di Cekungan Jawa Timur-Utara, diperlukan kajian lebih lanjut terhadap Formasi Ngimbang dan pra-Ngimbang untuk dapat menemukan prospek baru. Penelitian ini bertujuan untuk mengetahui stratigrafi dan persebaran batuan, mengetahui nilai properti batuan dari hasil perhitungan petrofisika, dan menentukan area prospek baru. Data yang digunakan mencakup dua sumur, yaitu sumur Silaen-1 dan Silaen 3, dan data seismik 3D. Empat marker yang digunakan dalam picking horison, yaitu R2, R1 (top dan bottom), dan SB pra-Tersier. Hasil analisis data sumur menunjukkan pada sumur Silaen-1 tersusun dari perlapisan batupasir, batugamping, dan shale berseling dengan batubara, sedangkan sumur Silaen-3 tersusun atas litologi yang sama dengan Silaen-1, tetapi tanpa batugamping. Perhitungan petrofisika pada sumur Silaen-1 menunjukkan nilai rerata porositas efektif 27%; Vshale 0,23; dan saturasi air 80%, sedangkan Sumur Silaen-3 memiliki nilai rerata porositas efektif 24%; Vshale 0,05; dan saturasi air 82%. Penentuan area prospek terbaru menggunakan kombinasi play, peta struktur kedalaman, dan juga sebaran porositas efektif. Berdasarkan ketiga parameter tersebut, ada tiga horison yang layak untuk potensi, yaitu top R1, bottom R1, dan SB pra-Tersier. Horison R1 terdapat dua area prospek baru untuk dilakukan eksploitasi, sedangkan horison SB pra-Tersier memiliki empat area prospek terbaru.
Geologi Pesisir Selatan Cianjur – Garut, Jawa Barat : Keragaman Dan Prospeknya Sebagai Obyek Geowisata
Authors: Djafar Agustina , Suharyogi Ifan Yoga Pratama , Winarto Johan Budi
Published: December 2021

Pesisir selatan Cianjur–Garut secara fisiografi termasuk ke dalam zona Pegunungan Selatan Jawa Barat yang memanjang dari Teluk Pelabuhan Ratu sampai dengan Pulau Nusakambangan. Daerah pesisir tersebut menempati wilayah yang sempit yang dibatasi oleh deretan pegunungan di sebalah utara. Pantai -pantai yang terdapat di sepanjang pesisir tersebut selain memiliki panorama indah juga memiliki beberapa keragaman geologi, akan tetapi belum dikembangkan secara optimal sebagai obyek wisata. Tujuan dari pembuatan makalah ini adalah untuk mengidentifikasi keragaman geologi yang terdapat di pesisir selatan Cianjur–Garut dan menentukan peringkat atau status keragaman geologi tersebut menurut hirarkinya, untuk selanjutnya direkomendasikan pemanfaatannya sebagai obyek geowisata. Metode yang digunakan adalah pengumpulan data lapangan dan analisis data secara kualitatif, yaitu identifakasi keragaman geologi berdasarkan PP No.13 Tahun 2017, penentuan status hirarki dan peringkat keragaman geologi berdasarkan pemanfaatannya (scientific value). Keragaman geologi yang dijumpai di daerah penelitian berupa keragaman bentang alam (pantai dan gumuk pasir) dan keragaman batuan (submarine pyroclastic deposit). Bentang alam pantai dan submarine pyroclastic deposit dapat dijumpai di daerah Cidaun–Cianjur, dan Caringin–Garut, sedangkan gumuk pasir terhampar di sepanjang garis pantai Cidaun–Cianjur. Keragaman geologi tersebut memiliki status hirarki tinggi dengan nilai scientific tinggi karena mengandung rekaman ilmiah, tatanan geologi atau bentang alam yang spesifik, yang dapat dimanfaatkan untuk penelitian, pendidikan, pemahaman alam dan konservasi.
Analisis Balik Stabilitas Lereng Tambang dan Rekomendasi Rekayasa Keteknikannya, Studi Kasus: Area Low Wall Pit Y Blok 4900-550 Strip 3500-4300 PT. Pamapersada Nusantara Site PT. Adaro Indonesia
Authors: Selsabeel Sahel , Widiarso Dian Agus , Trisnawati Devina
Published: December 2021

Dalam pelaksanaan kegiatan penambangan dengan sistem tambang terbuka pada site PT. Adaro Indonesia PT. Pamapersada Nusantara, terdapat indikasi ketidakstabilan lereng pada area low wall pit Y strip 3500–4300 blok 4900–5500. Data monitoring pada bulan September 2020, menunjukkan adanya pergerakan rata-rata 5mm/hari. Ketidakstabilan lereng pada tambang terbuka dapat mengganggu efektifitas produksi. Oleh sebab itu, diperlukan analisis balik untuk mengetahui kondisi aktual massa batuan, kondisi aktual lereng yang tidak stabil, dan kesesuaian nilai sifat keteknikan. Dalam mengatasi ketidakstabilan diperlukan rekayasa keteknikan lereng yang sesuai untuk meningkatkan kestabilan lereng. Metode analisis balik dipilih untuk mengetahui nilai faktor keamanan lereng yang mendekati keadaan tidak stabil. Selain itu, perhitungan faktor keamanan lereng untuk penentuan desain rekomendasi rekayasa keteknikan menggunakan metode kesetimbangan batas, dengan kriteria keruntuhan Mohr Coulomb. Berdasarkan analisis balik diketahui bahwa material penyusun lereng lokasi penelitian berupa material timbunan, batupasir, batulempung, dan batubara. Nilai sifat keteknikan hasil simulasi analisis balik menunjukkan angka yang lebih kecil dari hasil uji laboratorium. Material timbunan mengalami penurunan nilai kohesi sebesar 46,55% dan sudut geser dalam sebesar 11,83%, sedangkan pada batupasir unit LS3B mengalami penurunan nilai kohesi sebesar 94,70% dan nilai sudut geser dalam sebesar 56,40%. Rekayasa yang direkomendasikan untuk menaikkan nilai faktor keamanan lereng berupa pengubahan geometri lereng.
Perubahan Kecepatan Subduksi Lempeng Indo-Australia terhadap Lempeng Sundaland akibat Gempa Bumi Samudera Hindia tahun 2016
Authors: Alif Satrio Muhammad , Sauri Muhamad Sofyan , Perdana Redho Surya
Published: December 2021

Gempa bumi Samudera Hindia terjadi pada tanggal 2 Maret 2016 dengan magnitudo7.8 di sekitar zona subduksi Lempeng Sundaland. Implikasi tektonik dari gempa bumi dengan magnitudo di atas 7 ini diteliti karena implikasi tektonik gempa bumi di Samudera Hindia tahun 2012 sangat besar hingga Pulau Jawa. Penelitian ini bertujuan mendapatkan pengaruh gempa bumi Samudera Hindia tahun 2016 terhadap perubahan kecepatan subduksi. Data yang digunakan adalah data Global Navigation Satellite System (GNSS) kontinu di tujuh stasiun yang berada di Lempeng Indo-Australia dan Lempeng Sundaland. Data diolah dengan perangkat lunak ilmiah untuk mendapat solusi koordinat harian. Pada deret waktu koordinat, dilakukan perhitungan kecepatan degan regresi linier untuk data sebelum gempa bumi dan data setelah gempa bumi. Nilai kecepatan yang diperoleh digunakan untuk perhitungan regangan. Hal yang didapatkan dan dibahas adalah perubahan nilai kecepatan dan regangan, serta membandingkan arah kecepatan stasiun GNSS dengan arah kecepatan dari lempeng terkait. Kecepatan stasiun GNSS yang diperoleh berkisar 18 hingga 70 mm/tahun. Kecepatan stasiun GNSS mengalami penurunan dan regangan mengalami pertambahan nilai pemendekan setelah gempa bumi. Nilai perubahan semakin besar untuk stasiun yang lebih dekat ke Palung Sunda. Stasiun GNSS yang berada di pulau di sebelah barat Pulau Sumatra diduga berada di Blok Sumatra, pecahan dari Lempeng Sundaland.
The concept of cone b-Banach space and fixed point theorems
Authors: Yang Chen , Zhu Xiaolin
Published: December 2021

In this article, the concepts of cone b-norm and cone b-Banach space are given. Some new fixed point theorems in cone b-Banach spaces are established. The new results improve some fixed point theorems in cone Banach spaces. Furthermore, we also investigate the uniqueness of fixed points.
Some new parameterized inequalities for co-ordinated convex functions involving generalized fractional integrals
Authors: Kalsoom Humaira , Budak Hüseyin , Kara Hasan , Ali Muhammad Aamir
Published: December 2021

In this study, we first obtain a new identity for generalized fractional integrals which contains some parameters. Then by this equality, we establish some new parameterized inequalities for co-ordinated convex functions involving generalized fractional integrals. Moreover, we show that the results proved in the main section reduce to several Simpson-, trapezoid- and midpoint-type inequalities for various values of parameters.
Solution of integral equations via coupled fixed point theorems in 𝔉-complete metric spaces
Authors: Mani Gunaseelan , Gnanaprakasam Arul Joseph , Lee Jung Rye , Park Choonkil
Published: December 2021

The concept of coupled 𝔉-orthogonal contraction mapping is introduced in this paper, and some coupled fixed point theorems in orthogonal metric spaces are proved. The obtained results generalize and extend some of the well-known results in the literature. An example is presented to support our results. Furthermore, we apply our result to obtain the existence theorem for a common solution of the integral equations:

ζ

(

v

)

=
ð

(

v

)

+

∫

0

M

Ξ

(

v
,
β

)

Ω

(

β
,
ζ

(

β

)

,
ξ

(

β

)

)

d
β
,

v
∈

[

0
,
H

]

,

ξ

(

v

)

=
ð

(

v

)

+

∫

0

M

Ξ

(

v
,
β

)

Ω

(

β
,
ξ

(

β

)

,
ζ

(

β

)

)

d
β
,

v
∈

[

0
,
H

]

,

\left\{\begin{array}{ll}\zeta \left({\mathfrak{v}})=ð\left({\mathfrak{v}})+\underset{0}{\overset{{\mathfrak{M}}}{\displaystyle \int }}\Xi \left({\mathfrak{v}},\beta )\Omega \left(\beta ,\zeta \left(\beta ),\xi \left(\beta )){\rm{d}}\beta ,& {\mathfrak{v}}\in \left[0,{\mathscr{H}}],\\ \xi \left({\mathfrak{v}})=ð\left({\mathfrak{v}})+\underset{0}{\overset{{\mathfrak{M}}}{\displaystyle \int }}\Xi \left({\mathfrak{v}},\beta )\Omega \left(\beta ,\xi \left(\beta ),\zeta \left(\beta )){\rm{d}}\beta ,& {\mathfrak{v}}\in \left[0,{\mathscr{H}}],\end{array}\right.

where

(a)

ð
:
M
→
R

ð:{\mathfrak{M}}\to {\mathbb{R}}

and

Ω
:
M
×
R
×
R
→
R

\Omega :{\mathfrak{M}}\times {\mathbb{R}}\times {\mathbb{R}}\to {\mathbb{R}}

are continuous;

(b)

Ξ
:
M
×
M

\Xi :{\mathfrak{M}}\times {\mathfrak{M}}

is continuous and measurable at

β
∈
M
,

∀

\beta \in {\mathfrak{M}},\hspace{0.33em}\forall

v
∈
M

{\mathfrak{v}}\in {\mathfrak{M}}

;

(c)

Ξ

(

v
,
β

)

≥
0
,

∀

v
,
β
∈
M

\Xi \left({\mathfrak{v}},\beta )\ge 0,\hspace{0.33em}\forall {\mathfrak{v}},\beta \in {\mathfrak{M}}

and

∫

0

H

Ξ

(

v
,
β

)

d
β
≤
1
,

∀

v
∈
M

{\int }_{0}^{{\mathscr{H}}}\Xi \left({\mathfrak{v}},\beta ){\rm{d}}\beta \le 1,\hspace{0.33em}\forall {\mathfrak{v}}\in {\mathfrak{M}}

.
Symmetric pairs and pseudosymmetry of Θ-Yetter-Drinfeld categories for Hom-Hopf algebras
Authors: Liu Wei , Fang Xiaoli
Published: December 2021

In this paper, we investigate a more general category of

Θ

\Theta

-Yetter-Drinfeld modules (

Θ
∈
Aut

H

(

H

)

\Theta \in {\rm{Aut}}\hspace{0.33em}H\left(H)

) over a Hom-Hopf algebra, which unifies two different definitions of Hom-Yetter-Drinfeld category introduced by Makhlouf and Panaite, Li and Ma, respectively. We show that the category of

Θ

\Theta

-Yetter-Drinfeld modules with a bijective antipode

S

S

is a braided tensor category and some solutions of the Hom-Yang-Baxter equation and the Yang-Baxter equation can be constructed by this category. Also by the method of symmetric pairs, we prove that if a

Θ

\Theta

-Yetter-Drinfeld category over a Hom-Hopf algebra

H

H

is symmetric, then

H

H

is trivial. Finally, we find a sufficient and necessary condition for a

Θ

\Theta

-Yetter-Drinfeld category to be pseudosymmetric.
Structural Performance of Fusion Weld Based on Weld Parameters and Strain Rate in High-Density Polyethylene
Authors: Faraz Ahmed , Zai Behzad Ahmed , Nisar Salman , Mansoor Asif , Ali Rashid
Published: December 2021

Use of high-density polyethylene (HDPE) material has increased considerably in the last few decades to form long installation lengths of buried infrastructure such as water mains, sewers, and gas pipelines. These pipes are available in standard length sections and joined together to get customized length using fusion-welding techniques. The strength of welds highly depends on welding parameters such as temperature, heat, and soaking time. The structural performance also varies with respect to strain rate. In this paper, the strength of fusion-welded HDPE material is analyzed under different welding parameters and variable strain rates of welded and unwelded samples. An additional important aspect of the present research is to study the structural performance of fusion welds made between extruded HDPE pipes and injection molded HDPE fittings, i.e., elbows, Tee joints and closed-end cap connections. The strain-rate sensitivity index is measured with variable strain rates during tensile testing. The findings of this research can help in understanding and improving the structural performance of HDPE fusion-welded joints in various applications.
Adipocytes containing adipokines causes β-cell regeneration in previously streptozotocin induced hyperglycemic rats model
Authors: Azahari Nuraniza , Mohd-Shukri Nor Azwani , Khan Khattak Muhammad Muzaffar Ali
Published: December 2021

Introduction:The aim of this study was to evaluate the effect protein containing adiponectin from the adipocytes on the regeneration of pancreatic β-cells in rates previously treated with (STZ). Therefore, adipocytes from different sources were extracted for protein (adipokines) and the effect was evaluated on pancreatic β-cell regeneration. Methods: The protein extracts from trimmed off abdominal adipose tissues of meat sources, namely chicken, beef and lamb, were used in the present study. The fats were removed, and protein were isolated, and hydrolysate were prepared and injected to rats. The rats were induced hyperglycemia with streptozotocin (STZ) were divided into normal rats (Group-A), insulin treated rats (Group-B), protein containing beef adiponectin (PCBA) (Group-C), protein containing lamb adiponectin (PCLA) (Group-D), protein containing chicken adiponectin (PCCA) (Group-E) and no treatment hyperglycemic rats (Group-F). The rats were injected 30mg of the aforementioned proteins and pancreatic morphology was assessed two weeks post-treatment. Results: The pancreas of the Group-A showed normal islets of Langerhans with abundant beta cells. In the no treatment rats (Group-F), islets were lower in cellular density compared to the control and treatment groups. The pancreas of Group-C, D and E rats showed islets and acinar cells that were comparable to the control. The pancreas of insulin-treated Group-B was similar in architecture to the control group. Conclusions:The present study indicates that protein extracts containing adipokines from Adipocytes Containing Adiponectin Causes β-cell Regeneration in Rats
A cross-sectional study to assess the cause of present suicide attempt and socio-demographic profile among the suicide attemptees in a tertiary care centre, Bengaluru
Authors: Alalageri Kavya M , Shobha Shobha , TS Ranganath
Published: December 2021

Context: A high suicide rate is an index of social disorganization. In India, it is the second leading cause of death among 15-29 years age group. Young age, female sex, poor education, unemployment and socio economic deprivation are some of the potential risk factors. Aim: To assess the cause of present suicide intent and socio-demographic profile in patients with attempted suicide in a tertiary care centre. Settings and design: Study setting in tertiary care centre, Bengaluru and a Cross-sectional study design. Methods and material: A Cross Sectional Study was conducted among 476 suicide attempted patients by Convenient sampling from January 2016 to May 2017. Data was collected by using a pretested, semi-structured questionnaire. Statistical analysis: Descriptive statistics and inferential statistics if required. Results: Mean age of study participants was 30.65+0.75 years. Most of the suicide victims (82.97%) were from nuclear families.24.57%of study participants had family history of suicide.49.66% of them had a suicidal intent during the past 12 months and only 26.89% of them sought professional help. Conclusion: Suicides and attempted suicides are slowly but steadily assuming the levels of a public health problem caused by multiple factors. Hence there is a need to address the risk factors for suicide attempts and preventing them by taking proper measures at individual, family and societal level.