bluuebunny/crossref_metadata_2025_split huggingface dataset:
Kontribusi Program Pekarangan Pangan Lestari (P2L) terhadap Upaya Percepatan Penurunan Stunting di Kabupaten Sleman: Analisis Masa Pandemi COVID-19
Authors: Renita Renita , Helmyati Siti , Purwaningrum Digna Niken , Sitorus Nova Lidia , Dilantika Charisma 
Published: February 2024

Latar Belakang: Penguatan ketahanan pangan menjadi salah satu sektor kunci untuk mewujudkan gizi masyarakat yang optimal. Namun, capaian tingkat ketahanan pangan mencakup aspek penyediaan, stabilitas, aksesibilitas, dan penggunaan pangan di lingkup rumah tangga masih dikhawatirkan terjadi kesenjangan antar wilayah. Adanya pandemi COVID-19 turut menghambat upaya percepatan perbaikan gizi. Oleh karena itu, diperlukan strategi baru untuk memastikan terjaganya ketahanan pangan dan gizi saat situasi darurat sekalipun. Program P2L menjadi salah satu program prioritas dalam menjaga ketahanan pangan masyarakat. Namun, pelaksanaan program ini masih rentan terhadap keberlanjutan dalam implementasinya.
Tujuan: Penelitian ini bertujuan untuk mengkaji sejauh mana program Pekarangan Pangan Lestari dalam menjaga ketahanan pangan dan gizi masyarakat dan perannya dalam upaya percepatan penurunan stunting di Kabupaten Sleman pada masa pandemi COVID-19 sebagai sarana perbaikan program kedepannya.
Metode: Penelitian ini merupakan penelitian kualitatif deskriptif dengan pendekatan studi kasus. Metode pengambilan data dilakukan dengan wawancara mendalam, kuesioner, studi dokumentasi, dan observasi partisipatif.
Ulasan: Hasil dari penelitian menunjukkan pandemi COVID-19 berdampak nyata pada pemenuhan pangan tingkat rumah tangga Kabupaten Sleman. Pada masa pandemi COVID-19 dimana ruang gerak terbatas dan harga pangan yang fluktuatif, program P2L efektif dalam mendukung ketahanan pangan rumah tangga dengan berperan sebagai lumbung pangan hidup bagi masyarakat. Implementasi program P2L di Kabupaten Sleman baru memenuhi kebutuhan konsumsi sayuran, sementara kebutuhan protein hewani, protein nabati, pangan pokok, dan buah belum dapat memenuhi kebutuhan rumah tangga.
Kesimpulan: Program P2L berdampak positif bagi masyarakat, tetapi perlu adanya inovasi integrasi tanaman-ternak-buah pada masing – masing kawasan serta melakukan penguatan kelembagaan agar program dapat lestari.
Indikator Biokimia untuk Identifikasi Anemia Defisiensi Besi di Indonesia
Authors: Helmyati Siti , Hasanah Fina Cahya , Putri Febriani , Sundjaya Tonny , Dilantika Charisma 
Published: February 2024

Latar Belakang: Anemia merupakan salah satu masalah kesehatan yang ada di masyarakat, yang cukup banyak terjadi di negara berkembang khususnya Indonesia. Menurut World Health Organization (WHO), tiap tingkat usia memiliki potensial mengalami anemia, termasuk remaja usia 10-19 tahun. Melakukan deteksi dini atau skrining menjadi penting untuk dapat mengetahui lebih awal seseorang mengalami anemia defisiensi besi. Selain itu, dalam kerangka WHO untuk mempercepat penurunan angka anemia di dunia terdapat hasil yang ingin dicapai salah satunya yaitu dengan meningkatkan skrining anemia.
Tujuan: Tujuan dari literatur ini yaitu untuk mengetahui gambaran skrining melalui indikator biokima yang digunakan untuk identifikasi Anemia Defisiensi Besi di Indonesia.
Metode: Penelusuran literatur dilakukan pada database PubMed, Scopus, ScienceDirect, dan Garuda untuk literatur yang dipublikasi pada 2013-2023 sesuai panduan PRISMA. Artikel dikaji apabila berasal dari jurnal terindeks Scopus Q1-Q4 atau Sinta 1-Sinta 3 dengan desain penelitian eksperimental atau observasional yang dilakukan di Indonesia.
Ulasan: Melakukan skrining anemia pada wanita usia reproduksi untuk mengoptimalkan sintesis hemoglobin, mencegah kerusakan sel darah merah yang berlebihan, dan mengurangi kehilangan darah. Berbagai teknik skrining anemia telah dikembangkan di berbagai negara dengan mempertimbangkan metode yang terjangkau, mudah digunakan, dan non-invasif dibandingkan dengan metode invasif yang biasa digunakan. Banyak faktor yang perlu dipertimbangkan ketika memilih pengukuran Hb di laboratorium klinis atau lapangan termasuk kebutuhan kendali mutu (QC), kondisi ekstrim di lingkungan, kekurangan sumber daya di lingkungan, standar pelatihan yang tidak sesuai, dan kondisi ekstrim di lingkungan. Risiko dampak negatif Pengukuran Hb dapat dikurangi dengan mempertimbangkan berbagai faktor.
Kesimpulan: Di Indonesia, skrining masih sering menggunakan teknik invasif untuk mendeteksi anemia. Ini melibatkan pengambilan sampel darah vena atau kapiler dan pemeriksaan darah lengkap untuk mengukur kadar hemoglobin dalam darah melalui laboratorium. Berbagai negara telah mengembangkan metode skrining anemia yang lebih murah, mudah digunakan, dan non-invasif daripada metode invasif yang biasa digunakan. Alat penilaian yang dapat diandalkan untuk mengukur dan menafsirkan konsentrasi Hb diperlukan untuk mencapai tujuan global sebagai upaya mengurangi anemia dan mengevaluasi efektivitas intervensi.
Kata kunci: anemia, defisiensi zat besi, prevalensi, remaja, Indonesia
Investigating the Mechanism of Strong Roof Weighting and Support Resistance Near Main Withdrawal Roadway in Large-Height Mining Face
Authors: Du Junwu , Huang Qingxiang 
Published: February 2024

Abstract
Aiming at investigating the strong roof weighting when the large height mining face is nearing the main withdrawal roadway, the 52,304 working face (WF) nearly through the main withdrawal roadway mining in a colliery of Shendong coalfield was taken as the research background. The ground pressure, roof structure, and superposition effect of stress in the last mining stage were studied by field measurement, physical simulation, and numerical calculations. The obtained results demonstrated that the main roof formed the “long step voussoir beam” structure under the influence of the main withdrawal roadway. The superposition effect of the front abutment pressure of the WF and the concentrated stress of the main withdrawal roadway caused the stress asymmetrical distribution on the two sides -level hard rock straof the main withdrawal roadway, and the stability of the pillar on the mining side decreases. The initial average periodic weighting interval was 20.7 m. While the WF approaches the main withdrawal roadway, the pillar near the WF of the main withdrawal roadway collapsed, the main roof was broken ahead of the WF, and the actual roof control distance of support and the periodic weighting interval increased by 2.56 and 1.26 times the normal state, respectively. Consequently, the “static load” of the immediate roof and the “dynamic load” of the sliding unsteadiness of the long step voussoir beam increased. The structural model of the “long step voussoir beam” under the superposition of “static and dynamic load” was established concerning those results, and an expression was proposed to compute the support resistance. Meanwhile, the mechanism of strong roof weighting was revealed when the WF was nearly through the main withdrawal roadway. The research conclusion is expected to provide a guideline for the safe withdrawal of the large-height mining faces under similar conditions.
Compressive Fracture Behavior and Acoustic Emission Characteristics of Sandstone under Constant Crack Water Pressure
Authors: Huang Jiancheng , Luo Yong , Pu Chengzhi , Luo Song , Si Xuefeng 
Published: February 2024

Abstract
Engineering rock containing flaws or defects under a large water source is frequently subject to the couple influence of constant crack water pressure and geostress. To investigate the fracture behavior of precracked rock under hydromechanical coupling with constant crack water pressure, compression tests were conducted on red sandstone specimens containing a single crack of different angles using a device to realize the constant crack water pressure during loading, and the failure process of rock specimens was monitored by acoustic emission (AE) technique. The results show that the presence of constant crack water pressure has a significant promotion effect on the development of shear wing cracks, and the promotion effect is influenced by the prefabricated crack angle and water pressure. As the constant crack water pressure increases, the failure mode of the 0° precrack specimen changes from “X”- shear failure to the single oblique shear failure along the shear wing crack direction, the main failure crack of the inclined precracked specimens (precrack angles of 15°, 45°, and 60°) changes from a small acute angle with the prefabricated crack to a direction along the shear wing crack, and irregular cracks occur at the chipped prefabricated crack in the 90° precracked specimen. With an increase in the constant crack water pressure, the average energy for a single hit, cumulative AE energy, and cumulative AE hits decrease, and the proportion of the tensile cracks increases and that of the shear cracks decreases.
A Successful Alternative for Water Control and Reduction of Bypassed Pay in a Heavy Oil Reservoir: Case Study in Yuralpa Field, Ecuador
Authors: Hernandez Rubys M. , Teran Nayda G. , Rios A. F. , Bastidas D. V. , Vega J. A. , Mora H. E. , Martinez A. S. 
Published: February 2024

Abstract
Yuralpa field is characterized by a biodegraded heavy crude oil (from 14 to 18 °API) and a strong water drive that causes early water breakthrough in wells. Once the water breakthrough, the water cut increases rapidly to reach values between 90 and 95%. This effect occurs irregularly in the field and more prematurely in the wells located in the Chonta sector where the crude oil is the heaviest and most viscous. The excessive water production generates high handling costs and has caused the early abandonment of zones by applying cement squeeze and mechanical isolation (plugs) which generally required a rig intervention.
This paper summarizes a case study of the first application of water control in Yuralpa field using a Hydro Selective System (HSS) completion. It describes the relevant reservoir characteristics that lead to select this type of completion for Well YCCA-020 in a field where traditionally wells have been completed in a simple way. In addition, it explains the completion design, and it details the steps to change the position of the HSS valve and production results.
Well YCCA-020 was selected for this type of completion mainly because of the presence of a local vertical lithological barrier that separates the reservoir in two intervals. It is important to consider that the well was drilled in the higher viscosities sector of crude oil in the field that have more probability to leave bypassed reserves due to the difference in water-oil mobility ratio. The HSS valve was located between both intervals, and the well started producing from both intervals. Once the water cut reached 92% (105,000 bbl cumulative crude oil in 295 days), the valve was changed of position to produce from the upper interval, reducing the water cut up to 75% and increasing the oil rate to almost 200 BOPD. This completion allowed to drain the reserves of the lower interval (where the bottom aquifer is acting directly), reducing bypassed pay and to continue draining the reserves of the upper interval through a rigless intervention.
The water control completion probed in Well YCCA-20 was successful. This system could lead to future applications to water control in analogous reservoirs, simultaneously decreasing the risk of bypassed reserves in the field and reducing cost compared with workover or selective conventional completion used to isolate zones.
Multiphase Flow Pattern and Screen Selection: Two Overlooked Parameters Essential to Reservoir Control Valve Optimization
Authors: Malbrel C. A. , Kale R. , Agarwal J. , Gohari K. 
Published: February 2024

Abstract
The deployment of sophisticated Autonomous Inflow Control Valves (AICV) to manage reservoir uncertainty and water production in stand-alone completion is becoming increasingly popular, and the range of options available is constantly evolving. To date, much of the extensive testing performed with AICVs has assumed homogenous/dispersed flow (taking no direct account of production phase separation) and has ignored the potential role of varying screen geometries. Under a wide range of downhole conditions, stratified flow may be a more likely scenario and the full scale testing of AICV assembly under realistic downhole field conditions provides insights into the annular flow behavior and identifies critical interactions between the AICV and the screen, potentially leading to new means of enhancing AICV performance.
A series of multiphase flow tests was performed on full size screen and housing assemblies to verify flow pattern under realistic conditions and assess the potential for screen geometry to have an impact on the AICV performance in stratified flow conditions.
Various features of the screens, such as screen type (mesh screen, wire wrap), and screen/basepipe standoff height were investigated under various water fractions, flow rates and oil viscosities. The screen jacket was also partially blocked by a sleeve to simulate the partial burial of the screen in the wellbore. The multiphase flow patterns in the annular space around the screen and inside the valve housing were monitored through observation windows and high-speed camera, in conjunction with pressure drop across the screen and the entire assembly.
Under normal flowrates, it is observed that the multiphase flow shows a stratified flow pattern around the screen, with the location of the water/oil interface highly sensitive to the oil viscosity. For high viscosity oil (100cp), the W/O interface is very low, resulting in a high water phase velocity high. This provides another reason why the onset of water production in heavy oil is often causing rapid screen plugging and high drawdown. Under these conditions, stratified flow is also prevalent in the valve housing, irrespective of the screen type.
Under semi buried conditions, the screen type and standoff between the screen jacket and the basepipe played an outsize role in defining the flow pattern inside the housing. With a mesh screen and tall standoff, the flow pattern remains largely stratified while a wire wrap screen yields a bubbly/misty condition. As a result of these change in flow pattern, AICV performance is expected to be degraded when wire wrap screens are used in partially collapsed wellbore.
Deepwater Application of Proppant Controlled Release Inhibitor Leads to Successful Well Production in Gulf of Mexico
Authors: Spurr N. , Stanley D. , Usie M. , Debenedictis F. , Schneider D. , Lawler A. 
Published: February 2024

Abstract
Designing and achieving a deep-water frac pack in a new field that delivers low drawdown/low skin and high PI's is always a challenge. Successful design work, planning and execution are all key parameters. With additional challenges of a suspected high asphaltene content crude oil with relatively low onset pressures (AOP), another challenge was posed, "Can you place a solid inhibitor during the completion phase that can prolong expensive remediation treatments, while maximizing value by adjusting the chemical release pressure?" A new solid, controlled release proppant like inhibitor was introduced with a custom designed release pressure close to that of the AOP to solve the operator problem.
Frac packs were designed aggressively to achieve high net pressures, which historically achieve low drawdowns, low skin, and high PI's, and consequentially reduce the asphaltene deposition tendencies of the crude due to pressure drops. The controlled release asphaltene inhibitor proppant was tested for performance via asphaltene dispersion testing to ensure inhibitor performance and to obtain a minimum recommended loading. To further determine the best treatment for a new field development of two subsea tieback wells, reservoir conditions, AOP and desired protection points were evaluated.
The optimized fracturing design and custom controlled release asphaltene inhibitor proppant for the five treatment zones resulted in higher than expected PI's, lower than expected skins and overall exceptional wells. To date, no asphaltene deposition has been suspected and completion skin has remained low.
This paper introduces the next generation of flow assurance proppants that release asphaltene inhibitor when the well needs it the most and close to the AOP leading to less formation damage and a sustained production.
AI-Driven Well Log Interpretation Methodology for the Optimization of Water Control and Carbon Footprint Based on Polymer Injection
Authors: Katterbauer Klemens , Hassan Saleh , Al Shehri Abdallah , Yousef Ali 
Published: February 2024

Abstract
Energy-related sectors are making great efforts to guarantee the sustainability of their operations and lessen their carbon impact. Among these initiatives is field operation optimization to increase sustainability while preserving output levels. The oil and gas business is being greatly impacted by the fourth industrial revolution, which also makes it possible to analyze options for reducing carbon footprints more effectively. The formation can be precisely characterized, and its production behavior may be measured using modern production logging technologies. Technologies utilizing polymer injection have the ability to greatly reduce water cut, assisting in the reduction of carbon footprint. To model the effect of injecting polymers on the fluid production rates, we assessed the impact of several polymer injection techniques on the Volve field using a number of production and injection wells. The injection of polymers aids in lowering the reservoir's water production rates. This in turn lowers the carbon footprint associated with handling produced water and water injection. An important part of the optimization is the integration of well log interpreted polymer quantities to optimize the recovery. A probability-likelihood framework was used to calculate the overall carbon footprint after several scenarios were assessed to establish their widespread influence on carbon emissions. While the best injection technique may vary depending on a number of variables, polymers have shown to be capable of drastically lowering total carbon footprints while improving hydrocarbon output.
Wellbore Integrity Challenges in Saltwater Disposal: Case Study on the Fort Worth Basin
Authors: Khan Jawad Ali , Michael Andreas 
Published: February 2024

Abstract
This paper examines wellbore integrity in saltwater disposal (SWD) operations via modeling the stress-distribution evolutions within a well's casing-cement sheath-rock formation (C/CS/RF) system. Injection from SWD wells is thought to be responsible for elevated seismicity in regions of high oil-and-gas activity, such as the Fort Worth Basin in northeastern Texas. This modeling approach is useful for practitioners to take the appropriate preventative measures in the form of hazard-mitigation guidelines.
Induced (or "triggered") seismicity phenomena depend on the fluid-injection parameters, as well as the reservoir's petrophysical and geomechanical properties, including the presence of naturally-occurring pre-existing faults (PEFs) and their frictional behavior. The increase of the pore pressure within the FWB region, following water injection from SWD wells in 12 counties was obtained in the literature and used as inputs assessing the integrity of the C/CS/RF system against a total of ten modes of mechanical degradation. These degradation modes are induced by collapse/burst and compressive/tensile stress loads within the casing layer, inner or outer debonding, radial cracking, shear cracking, and disking within the CS layer, and tensile fracture initiation in the adjacent-RF.
The potential impacts of this wellbore-integrity compromise in SWD operations are discussed, as some of the aforementioned mechanical degradation modes are likely to adversely impact wellbore integrity a-priori to the occurrence of induced seismicity. Tendencies towards radial cracking and disking are identified to occur a-priori to any induced seismicity occurrences. This mechanical degradation means can facilitate for saltwater leakages towards neighboring zones in the subsurface and influence injectivity negatively.
Such saltwater leakages can have a stabilizing effect that may suppress induced seismicity. Three-dimensional (3D) hydromechanical modeling from past studies attempted to draw spatial and temporal correlations between seismic-activity observations and areas of pore-pressure elevation. Several localized regions of predicted-pore-pressure buildup did not indicate strong correlations with the recorded earthquake occurrences.
Non-Damaging Nano Polymeric Product Enhances Bridging Agents Packing for Limestone Reservoirs in the Persian Gulf
Authors: Pietrangeli G. , Hayden L. , Addagalla A. 
Published: February 2024

Abstract
Water-based drill-in fluids (WB DIF) with high concentrations of lubricants and other materials that assist in reducing the fluid loss are commonly used to drill tight and high overbalance reservoirs in the south-west Persian Gulf. Exposure and damage of the formation by these products is highly possible due to the characteristic high fluid loss of WB DIF. This paper discusses the improvement of a WB DIF by adding a non-damaging polymeric product to enhance filtercake packing. The chemistry and the particle size of the polymeric product enhances the bridging properties of the calcium carbonate, thus improving the wellbore strengthening and reducing formation damage.
Return permeability (RP) testing is widely used in the oil industry to evaluate fluid-rock interaction. RP testing indicates potential causes of production impediments generated after drilling by filtercake deposition and filtrate invasion. Limestone outcrops from Mississippian formation with a permeability between 9-16 md and 14-18% porosity were used for the RP tests. Damage minimization from the drill-in mud with no requirement for a breaker were the main goals for the fluid development to drill the tight limestone reservoir. Therefore, higher RP values to permeable oil was the desired outcome of the tests.
The solid particles used in the drill-in fluid should generate optimal packing to achieve lower filtrate invasion. Software simulation and calculations for bridging optimization are highly recommended, but brittle particles such as calcium carbonate could deviate from the predictions after passing though the drilling nozzles and changing their size with no control. The use of non-damaging polymeric and deformable particles could help with the packing of the bridging agents and improve the wellbore strengthening by reducing filtrate invasion. This paper presents results for a fluid before and after the addition of bridging enhancer. In the study, the addition of the non-damaging polymeric material had no effect on the rheological properties of the fluid. Furthermore, the fluid loss decreased almost 40% at 160°F and 85% at 250°F using paper as a filtration media. The RP of the original WB DIF was 79.7% at 4 cm3/min using LVT-200 as a permeating oil and 89% after centrifugation, indicating connate water damage. The RP of the enhanced fluid was 92.7% at 4.0 cm3/min and 93.5% after centrifugation, indicating no damage by connate water and a significant decline in the formation damage by filtrate invasion due to the improved packing of the bridging agents. No breaker was required for the fluid due to the high RP thus decreasing cost of the operation by reducing rig time and chemical treatments.
Return permeability evaluation between the drill-in fluid and reservoir rock is essential for oil producer wells to determine damage caused by the fluid, filter cake, and filtrate. Improving the packing of the bridging agents enhances fluid loss and decreases formation damage.