Technical Report Research Articles

Dorsolateral Transdural Surgical Management of Spontaneous Intracranial Hypotension From Ventral Dural Cerebrospinal Fluid Leaks: Case Series and Technical Report

BACKGROUND and OBJECTIVES: Spontaneous intracranial hypotension is an uncommon but debilitating condition that commonly involves positional headaches and vertigo. One cause is cerebrospinal fluid (CSF) leakage from ventral dural defects from calcified spinal discs. Patients can undergo epidural blood or fibrin glue patches as treatment; however, in cases where the leak does not resolve, surgical repair of the dural tear may be warranted. We aim to describe a case series and technical notes for these patients. METHODS: Patients with spontaneous intracranial hypotension because of myelography-confirmed ventral dural defect from calcified thoracic disc, who were treated surgically between June 2020 and March 2024, were included in the study cohort. Demographic information, clinical course, and postoperative outcomes were collected. The surgical technique was also described based on an illustrative case. RESULTS: Twelve consecutive patients underwent surgery between June 2020 and March 2024 with postoperative records. The median age at the time of surgery was 41.5 years (range: 28-58 years). Male patients comprised 50% of the cohort. Dural defects were spread throughout the thoracic spine in the cohort. While all patients reported positional headaches, other symptoms included vertigo, pulsatile tinnitus, and neck pain. Median length of follow-up time was 6.5 weeks. There were no surgical complications or permanent neurologic deficits. All patients had radiologic cure of their leaks with absence of extradural CSF on postoperative MR imaging. Ten patients (83.3%) had complete resolution of spontaneous intracranial hypotension-related symptoms. Two patients did suffer from rebound headaches postoperatively. CONCLUSION: The dorsolateral transdural surgical approach is a safe and effective method to repair type 1 CSF leaks caused by ventral dural defects. Our case series of 12 patients did not involve any surgical or immediate postoperative complications, and all patients had radiologic resolution of their leaks with relief of positional headaches. Two patients experienced continued headaches after treatment.

Custom Ocular Prosthesis With Intraoral Obturator for Orbital and Intraoral Defects Resulting From Mucormycosis: A Technical Case Report

Custom Ocular Prosthesis With Intraoral Obturator for Orbital and Intraoral Defects Resulting From Mucormycosis: A Technical Case Report

Measurement Invariance for Multilingual Learners Using Item Response and Response Time in PISA 2018

AbstractThis study examines potential assessment bias based on students' primary language status in PISA 2018. Specifically, multilingual (MLs) and nonmultilingual (non‐MLs) students in the United States are compared with regard to their response time as well as scored responses across three cognitive domains (reading, mathematics, and science). Differential item functioning (DIF) analysis reveals that 7–14% of items exhibit DIF‐related problems in scored responses between the two groups, aligning with PISA technical report results. While MLs generally spend more time on the test than non‐MLs across cognitive levels, differential response time (DRT) functioning identifies significant time differences in 7–10% of items for students with similar cognitive levels. It was noticeable that items with DIF and DRT issues show limited overlap, suggesting diverse reasons for student struggles in the assessment. A deeper examination of item characteristics is recommended for test developers and teachers to gain a better understanding of these nuances.

Specificity ratings for English data.

A dataset of specificity ratings for English words is hereby presented, analyzed and discussed in relation with other collections of speaker-generated ratings, including concreteness. Both, specificity and concreteness are analyzed in their ability to explain decision latencies in lexical and semantic tasks, showing important individual contributions. Specificity ratings are collected through best-worst scaling method on the words included in the ANEW dataset (Bradley and Lang in Affective norms for English words (ANEW): instruction manual and affective ratings (Tech. Rep.). Technical report C-1, the center for research in psychophysiology, 1999), chosen for its compatibility with many other collections of rating resources, and for its comparability with Italian specificity data (Bolognesi and Caselli in Behav Res Methods 55(7):3531-3548, 2023), allowing for cross-linguistic comparisons. Results suggest that specificity plays an important role in word processing and the importance of taking specificity into consideration when investigating concreteness effects.

Individual dynamics mathematical patterns of qualified basketball players competitive performance

Background and purpose Since the goal in sport is to overcome one's limitations and take one's functional state to a qualitatively new level, forecasting is an integral part of managing any process, including the athlete's training process. Purpose: to develop an algorithm and identify patterns of individual dynamics in competitive performance of eligible basketball players. Materials and methods The main team players of the men's basketball team of H.S. Skovoroda Kharkiv National Pedagogical University. Twelve matches of the experimental team playing against national teams of other universities were analyzed. Observations were made on the players during the championships played by student teams from Kharkiv. For each player, the number of shots and hits from short, mid and long range, goal assists, shots and hits from the penalty line, and turnovers were recorded. To identify individual patterns of competitive performance dynamics, indicators such as 'total positive points in a match', which most accurately reflect a player's 'positive' contribution to the outcome of a match, were used. To identify individual regularities in competitive performance dynamics, indicators such as 'total positive points in the match', which most accurately reflect the 'positive' contribution of players to the outcome of the match, were used. Results It was determined that the process of change in competitive performance should be treated as a variable process. The most appropriate function to describe this model is the sine function. It was shown that the regression model of the individual dynamics of competitive activity of the players of the Ukrainian national basketball team has a sine dependence, which is defined by the regression equation S + = a + bsin ((2π / t) (Т-c)). Where the coefficient a is the average value of a player's match performance, b is the amplitude of the change in a player's match performance, t is the previous period of a player's match performance and c is the value period in the first analyzed match. Conclusion The application of the regression sinusoidal model proved to be effective in practical studies. This is because, using only data from technical reports, it is possible to very quickly predict periods of 'rise' and 'fall' in an individual's game performance, which is useful for adjusting training programs and identifying psychophysiological individual characteristics of players.

Maternal and newborn health prioritization in Yobe State, Nigeria: analysis of stakeholders' perspective.

Maternal and newborn mortality and morbidity in conflict-affected northeastern areas of Nigeria, such as Yobe State, are disproportionately higher than those in the rest of the country. There is limited evidence on the factors that influence maternal and newborn health (MNH) policymaking and implementation in this region, particularly with respect to the impact of conflict and context-specific issues. This study explores the political, economic and health system factors that drive the prioritization of MNH policies in Yobe State. The aim of this study was to elucidate the conflict-related factors influencing MNH outcomes, which could inform targeted interventions to improve MNH. The study is a descriptive case study that relies on multiple data sources and is guided by the Health Policy Analysis Triangle. We reviewed national and subnational research, technical reports and policies related to reproductive health and the MNH in Nigeria since 2010. Following stakeholder mapping, we identified and invited prospective participants in the MNH policymaking space. Nineteen stakeholders from the government, civil society and nongovernmental organizations, donor agencies, and public and private sector health providers in Yobe State participated in the semistructured in-depth interviews. Data were collected from November 2022 through January 2023 and were thematically analysed via Dedoose software. MNH services in Yobe State have received considerable attention through initiatives such as the National Midwifery Service Scheme, free MNH services, training of midwives with deployment to rural areas, and health facility renovations. The effective implementation of MNH services and policies faces challenges due to insufficient funding, and sustainability is hampered by changes in governance and political transitions. The Boko Haram insurgency exacerbated the humanitarian crisis in Yobe State and disrupted MNH services due to the displacement of populations and the decline in the number of health workers. Additionally, sociocultural and religious beliefs hinder timely access to and utilization of MNH services. Although policies and guidelines for MNH services exist in the state, they are inadequately disseminated to health providers, which affects their effective implementation across facilities. Collaboration and intersectoral coordination platforms exist, but competition and rivalries among unions, political entities, and implementing agencies sometimes impede progress. Enhancing MNH services in Yobe state requires increased commitment for funding through the Northeast Development Commission rehabilitation fund; strengthening the health workforce, safety and retention plan; promoting gender inclusivity within the health sector; and addressing sociocultural barriers to women's health-seeking behaviors. Concrete, time-bound plans for policy dissemination are necessary to ensure effective service implementation.

Comparative analysis of fetal dose sparing between a C-arm linac and an O-ring linac in a SIB-VMAT sarcoma treatment for a pregnant patient: A technical note and case report.

To compare the effect of two linacs designs on fetal dose sparing on a pregnant patient, including estimation of the fetal dose, and the effect of a lead apron. A patient with a high-grade sarcoma located in the right knee/lower thigh was prescribed 51Gy (1.7Gy/Fx) with a simultaneous-integrated-boost (SIB) of 60Gy to a smaller volume, starting in the 26thgestational week. Volumetric modulated radiation therapy (VMAT) plans with 6MV-FFF were developed using identical dosimetric constraints on a Varian Truebeam Edge with HD-MLC and a Varian Halcyon with double-stacked MLC. Based on patient dimension measurements, an anthropomorphic phantom was constructed using a Rando phantom and saline bags in the patient's Vac-Lok bag. Phantom measurements were performed using OSLDs and TLDs placed at three different planes, corresponding to the pubis, the umbilicus, and the fundus based on patient measurements and projected gestational age, to estimate the fetal dose. Three experimental scenarios were measured, each with CBCT-based image guidance for an accurate, reproducible setup: Edge, Halcyon, and Halcyon with a tri-folded lead apron (0.5mm×3=1.5mmPb) over the phantom abdomen. Plan quality and total MUs are comparable between the Edge and Halcyon plans. The OSLD-measured whole-course dose to the pubis, umbilicus, and fundus were 18.8, 13.1, and 11.7 cGy, respectively, on Halcyon, on average 27.8% lower than Edge. The repeatability within either dosimeter was good, although TLD showed systematically lower doses. Importantly, both dosimetry systems showed a lower measured fetal dose for the Halcyon plan compared with the Edge plan. Adding a tri-folded lead apron over the abdomen did not meaningfully lower the measured dose. In this case study, Halcyon demonstrated a better sparing of out-of-field fetal dose compared to TrueBeam Edge. It was shown that lead aprons do not provide additional fetal dose sparing.

Development and commissioning of ion-optical elements for ion and antiproton beams with energies up to 5 keV

In nuclear and atomic physics experiments, charged ion beams often need to be guided from the ion production to the experimental site. In the PUMA experiment, an ion source beamline was developed, which can be operated with up to 5 keV beam energy at a base pressure of 10-9 mbar or better. In this technical report, a low-energy pulsed drift tube for beam energy modification, a hybrid einzel lens assembly for beam focusing and steering and an iris shutter assembly for separating beamline sections with different vacuum requirements are described with their design principles and performances.

Endoscopic double line suture repair technique for repairing Iatrogenic dural tear: a technical case report.

Introducing a suture repair technology, endoscopic double line suture repair technique, for iatrogenic dural injury during Percutaneous Endoscopic Lumbar Discectomy (PELD) surgery. A patient with dural injury and cauda equina herniation during PELD surgery was treated with endoscopic double line suture repair technique. A patient with dural injury and cauda equina nerve herniation during PELD surgery was successfully treated using double-line suture technique. After the repair, no obvious cerebrospinal fluid leakage and cauda equina nerve re-herniation was seen. During the postoperative observation period, the wound healed well and there were no complications related to cerebrospinal leakage. During the follow-up period (1 year), the patient reported significant symptom relief and no complications. This novel dural repair technology is safe and effective and can be used to treat dural injuries during PELD surgery.

Innovative Juncus effusus plant biofilter for enhanced ammonia removal: design, construction, and preliminary testing

A developing trend in stormwater treatment and management is the use of green technologies. Plant biofilters have been gaining increasing use in support of green technology objectives. This technical note reports on the development and preliminary testing of a laboratory-scale plant biofilter prototype for ammonia removal using a South African native plant species (Juncus effusus). The prototype design was based on a conceptual model for nitrogen fixation, plant uptake, bacterial nitrification and soil sorption. Additionally, a plug compartment was incorporated into the design to simulate plug flow as part of the conceptual model. Biofilter models with and without inoculated bacteria were compared. Ammonia reduction, nitrite and nitrate formation were observed. Results showed that the inoculated plant biofilter performed best, with an average of 61% reduction in ammonia within the filter compared to 15% in the normal plant biofilter. The incorporation of a plug compartment aided in slowing down the ammonia infiltration rate, increasing the retention time, and allowing for nitrification to occur.

Two centuries of ornithological exploration of the Rio Doce Basin, southeastern Brazil. Part II—A catalogue of its birds and a gazetteer

The Rio Doce Hydrographic Basin (RDB) lies almost completely in the Brazilian Atlantic Forest, a highly threatened tropical rainforest. The RDB has suffered dramatic anthropogenic impacts during the last two centuries and is currently one of the most degraded regions in southeastern Brazil. In this paper, we gathered 140,742 bird records collected since the early 19th by more than two thousand naturalists, professional scientists, and citizen scientists. This vast database was compiled from several sources, including published literature, unpublished technical reports, natural history museums, and citizen science platforms. After checking and standardizing the database, we found high species richness in the RDB, with 689 species recorded to date, from which 675 (98%) were documented by specimens or digital vouchers. This database is presented as a detailed catalogue, including maps containing all localities in which each species has been recorded. We present text accounts for 40 noteworthy species recorded in the RDB, and a complete gazetteer for the 636 localities sampled. Preliminary analyses reveal that the RDB avifauna suffered a dramatic change in its species composition during the last two centuries, mostly due to human activity. Highly sensitive species associated to pristine forests vanished, while species associated to dry and open habitat expanded their ranges in the RDB. Finally, in addition to thoroughly characterization of the RDB avifauna, this paper provides the basis for a series of studies about the avifauna of one of the hottest hotspots of biodiversity in the entire Neotropical region.

What is a “good” library? The measures are changing

PurposeStandardization of library performance measures started in 1994, when several handbooks describing performance indicators had already appeared. The 1st edition of the International Standard ISO 11620 was published in 1998, followed by an amendment 5 years later, both dealing with the traditional library. As indicators for the digital library services were still developing, a pre-standard technical report for such indicators was published separately in 2003. The second edition was published in 2008 and combined 45 indicators for traditional and digital services, if possible, as “hybrid” indicators. The 3rd edition appeared in 2013 with 52 indicators, presenting new topics such as preservation and digitization. For this edition, seven indicators had been eliminated as outdated. The 4th edition was edited in 2023, presenting 61 indicators, of which 14 new indicators and many revisions. The paper follows the subject areas and corresponding indicators over time and tries to define the present and possible future trends.Design/methodology/approachThe paper describes the development of library performance measurement as standardized in ISO 11620. It follows the changes, additions and deletions of indicators since the first edition in 1998 and compares them to the changes in libraries’ tasks and activities.FindingsThe analysis shows that indicators for changing tasks and technologies or for new fields of interest follow a few years after the changes, as the methods have to be developed and tested. New topics are often introduced from outside, following political trends and themes, such as cost-efficiency or support for special user groups. An important input came from other standards with quality indicators, especially ISO 21246 for museums and ISO 21248 for national libraries. An interesting issue is the changing role of indicators for the digital library in ISO 11620. Until the forthcoming edition, a simple increase in digital collections and services was often regarded as quality. The new concept is to regard the existence of digital services and collections in libraries as normal and to look for additional aspects, e.g. the use of a digitized collection.Research limitations/implicationsFor the first time, the forthcoming edition will contain a clause about impact assessment. Measuring the quality of library services should not stop with effectiveness and efficiency but should also include assessing the impact on individuals and society. Methods for assessing library impact are described in a separate standard, ISO 16439. However, there is evidently a borderland between evaluating the quality of library services and identifying their effect on users. The new edition of ISO 11620 tries to clarify this and includes some “border” indicators, such as measures for the awareness of libraries their services.Originality/valueThe overview of developments in the standardized performance measures will help to understand the relation of the indicators to the current goals and tasks of libraries and may further the use of the standard. As libraries’ tasks and activities will continue to develop and change, new topics will come up in the next few years, some of which can already be identified today.

Food insecurity, associated climate factors and intervention mechanisms: a theoretical and empirical analysis of Ethiopia’s case

Purpose In our world, nearly nine million people die every year from hunger, losing one person to hunger every few seconds. Ethiopia is among the leading countries in the total number of people facing hunger. Several actions have been taken to achieve food security globally and at the household level. However, the problem of food insecurity is still high in many parts of the world. Why are we failing to achieve food security? And where should we start? This study aims to answer these main questions. Design/methodology/approach Relevant quantitative and qualitative data were duly used to describe food insecurity and associated climate factors globally and nationally. For this, PRISMA review methodology was used to help the systematic review. More than 90 relevant empirical and theoretical literature in the field were reviewed in an integrated way with practical evidence from Ethiopia. Governmental technical reports, NGOs reviews and other relevant empirical data referring to Ethiopia are thematically analyzed. Findings The subjectivity, dynamism and complexity of the concept of food security are found to be some of the issues challenging the practice of achieving food security. The unresolved issues in the combination and interaction of the four pillars of food security (food availability, access to food, food utilization and stability) are affecting its measurement. In this study, it is emphasized that food insecurity in rural and urban areas should be treated differently, as food insecurity in rural areas is directly related to food production which depends on rainfall patterns. In rural Ethiopia, rainfall variability was among the main causes of food insecurity. More importantly, it is indicated that rainfall variability does not affect all pillars of food security equally; its effect is more pronounced on food availability and stability aspects. Deconstructing the concept of food security to make it more pragmatic, and understanding the factors behind the rainfall variability should be the starting tasks in achieving food security. Further, even though food aid is preferred to react to transitory food insecurity, focusing on long-lasting preventive measures that address the root causes of the recurring food insecurity in rural areas of Ethiopia would be an effective way of addressing the problem. Practical implications Policy makers and other governmental and humanitarian agencies working on food security can make an evidence-based decision, shape policies and programs if they have clear information about the features of food insecurity, the nature of rainfall variability and critiques of the reacting mechanisms to food insecurity. Shortages of food in some place and food price crises in the other places have been both referring to food insecurity. This makes the understanding of food security situations more difficult to explain and communicate. Originality/value This study primarily clarifies the conceptual complexity surrounding food security as it currently exists. Further, it provides a comprehensive and quantitative description of the state of global to national food security, along with the associated variability of rainfall patterns that are related to it. It also provides a brief overview of the intervention mechanisms for addressing food security, with a specific focus on Ethiopia. This study has set a clear demarcation to assess food security in rural and urban areas.

Energy-Efficient and Smart Bicycle Lamps: A Comprehensive Review

In this review paper, information about bicycle lamp technical parameters is provided. The review is based on the searched Web of Science (WoS) and Scopus bibliographic databases and Transportation Research Information Services, which include references to books, technical reports, conference proceedings, and journal articles. This review showed that these papers about bicycle lighting legal rules in given countries are very easy to reach, but deep searching must be performed to find this research paper having the information about types of optical systems and light sources used in bicycle lamps. This research was conducted using PRISMA 2020 assumptions in the area of bicycle lighting technologies and innovations. The information about bicycle lamp technical parameters was obtained on the basis of the examination of technical documents and papers from high-impact journals. The author’s review shows that contemporary bicycle lamps are becoming increasingly smarter and more energy efficient, while also enhancing safety and comfort for cyclists on their routes in and beyond urban environments.

PP05 Presentation Time: 4:36 PM: IAEA Technical Report Series 492: Brachytherapy Dosimetry Code of Practice for Secondary Standards Dosimetry Laboratories and Hospitals

PP05 Presentation Time: 4:36 PM: IAEA Technical Report Series 492: Brachytherapy Dosimetry Code of Practice for Secondary Standards Dosimetry Laboratories and Hospitals

3D Map Combined with Transthoracic Echocardiography for Ablation of Premature Ventricular Contractions/Ventricular Arrhythmia from Papillary Muscle: A Technical Report.

Ventricular arrhythmias originating from the papillary muscle of the ventricles are complex clinical problems. Catheter ablation has the potential to cure these arrhythmias. However, the procedure is usually challenging due to the specific anatomy, catheter instability and difficulty in localization of the origin of the arrhythmias. Intracardiac echocardiography (ICE) has been reported to be the suitable imaging method for assessing the location of focus in papillary muscles. We used transthoracic echocardiography (TTE), as a noninvasive cost-effective imaging supporting modality, in combination with 3D mapping to guide the exact localization and successful ablation of papillary muscle-originating premature ventricular contractions (PVCs).

Impact of breast reconstruction on quality of life in women undergoing mastectomy for breast cancer: a systematic review and meta-analysis using the Breast-Q questionnaire

Introduction: Post-mastectomy breast reconstruction is crucial in breast cancer treatment; however, its impact on women’s quality of life (QOL) remains inadequately understood. The BREAST-Q questionnaire is used for assessing QOL related to breast surgery. Therefore, this study aimed to determine whether there are differences in QOL between women undergoing mastectomy with and without breast reconstruction using the BREAST-Q questionnaire. Methods: We conducted a systematic review and meta-analysis following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses 2020 guidelines and registered in PROSPERO. Articles in English, Portuguese, or Spanish were included, and studies on prophylactic mastectomy or breast-conserving surgery, duplicate studies, duplicate data, articles without original data (reviews, editorials, case reports, technical reports) and those without breast reconstruction were excluded. A comprehensive search was conducted across nine scientific databases. The defined search strategy was related to the terms standardized by the MeSH/PubMed controlled vocabularies, including Medical Subject Headings (MeSH), Embase subject headings (Emtree), and their synonyms. Statistical heterogeneity was assessed using the chi-squared and inconsistency tests. Statistical analyses were performed using the R software. A meta-analysis was performed for each BREAST-Q domain when data from multiple studies were available. Results: Of 1266 studies identified, three with 611 participants were included in the meta-analysis. Of these participants, 248 underwent mastectomy without reconstruction and 363 underwent post-mastectomy breast reconstruction. The meta-analysis revealed significantly higher scores in the domains “satisfaction with the breast,” “physical well-being of the chest,” “psychosocial well-being,” and “physical well-being” in women who underwent breast reconstruction compared with those who did not. Conclusion: This study demonstrates a positive association between breast reconstruction and enhanced QOL in women undergoing breast cancer treatment and mastectomy. Patient-reported outcome measures using questionnaires, such as Breast-Q, can elucidate satisfaction levels with the reconstruction, which will likely improve continuously with advances in modern plastic surgery.

Use of Advanced Platelet-Rich Fibrin for the Treatment of Multiple Adjacent Mucogingival Recessions: A Technical Report of the Fibrin-Assisted Soft-Tissue Promotion Protocol.

Platelet-rich fibrin (PRF) has had a marked impact on regenerative medicine due to its widespread ability to promote angiogenesis to defective tissues. Particularly in the dental field, evidence from randomized clinical trials has further shown that PRF facilitates greater soft-tissue regeneration when compared with hard tissues. Recently, the fibrin-assisted soft-tissue promotion (FASTP) technique has been developed as a means to promote soft-tissue regeneration of mucogingival recessions utilizing PRF. Within the present case report, a 28-year-old male presented with multiple adjacent mucogingival recessions in the maxilla ranging in probing depths (1-3 mm) and gingival recessions (1-5 mm). For optimal regenerative outcomes, the use of advanced PRF (A-PRF; 1300 RPM for 8 min) has been utilized to enhance regenerative outcomes by fully taking advantage of the low-speed centrifugation concept (LSCC). This case report highlights the latest surgical concepts, centrifugation protocols, and use of the LSCC to regenerate multiple adjacent mucogingival recessions in the esthetic zone.

Application of surgical revascularization technique in giant aneurysm of the extracranial internal carotid artery: technical report.

The purpose of this study is to illustrate the diagnostic and therapeutic value and clinical significance of surgical revascularization in giant aneurysms of the extracranial internal carotid artery. The research team screened a group of cases of giant aneurysms of the extracranial internal carotid artery and analyzed the detailed information of the enrolled patients in terms of their basic clinical characteristics, surgical approaches and clinical prognosis. All patients had a good prognosis, except for one patient who was left with only mild facial nerve palsy (grade II facial paralysis). The results demonstrate that surgical revascularization is effective and safe in the treatment of giant aneurysms of the extracranial internal carotid artery. The significant conclusion of this study is to provide an ideal alternative treatment for the treatment of giant aneurysms of the extracranial internal carotid artery. The surgical revascularization technique is a powerful tool for vascular neurosurgeons in the management of complex cerebrovascular diseases when traditional surgical clipping or endovascular interventions encounter bottlenecks.

Practice of the systematization and centralization of archive fund materials of the PJSC ALROSA geological exploration complex

Effective usage of information accumulated over decades of geological exploration requires a tool that allows cataloging, describing, and providing access to both paper and electronic versions of the materials. Despite gradual digitalization of all the major geological exploration processes, there still remains large volume of the materials from previous years on paper media (technical reports, projects, etc.). They continue to be systematically digitized, while new reporting materials are generated in digital form. In addition, thematic scientific articles and publications are annually published. How to combine all the materials and to ensure quick and convenient access to them? There exist various ways to achieve this goal. The Vilyuisk Geological Exploration Expedition (VGRE) of PJSC ALROSA has taken the path of developing a dedicated information system «EFB GRK» designed to store and get access to the information on geological reports, scientific works, articles, etc. Each type of the documents is provided by its own attribute information; several types of the documents are grouped into thematic sections. The system allows one to obtain information on the availability of the projecting and reporting documentation in the archive funds with ability to order and receive and to trace the movement of such documentation.