Response of forensic scientific community to Covid-19 pandemic: A Review Article

The purpose of this review was to show the impact of the Covid-19 pandemic on forensic science as reflected in the publications, which appeared in 2020. The review covered following topics: response of legal medical experts on the increased daily workload in forensic practice and enhanced risk issues arising in forensic practice, particularly regarding autopsy, drugs used in Covid-19 therapy and their toxicological significance, and influence of the Covid-19 pandemic on the profile and extent of substance abus

Gender-related voice problems in transsexuals — therapeutical demands

  The paper presents a case study of a transsexual patient who underwent a voice pitch elevation surgery performed in Poland for the first time. The human voice is a reflection of the working of hormones and human psyche. This fact is of particular importance in transsexualism, a disorder consisting in incongruence between the individual’s biological sex and their identified gender. For many transsexual people, especially of the MTF (male to female) type, who have undergone hormonal and surgical sex change, the voice still presents a major problem, causing difficulties in everyday life. Hormonal treatment does not influence feminisation of the larynx. In the described MTF case, the patient’s low androphonic voice was perceived as a male voice. In order to feminise the patient’s voice a phonosurgical procedure was performed: the length of the vibrating portion of the vocal folds was shortened by over 50% of their total length by means of suturing of the anterior part of the vocal fold. As a result of the surgical treatment the pitch of voice was raised considerably, with F0 of spoken voice increased from 109 Hz to 209 Hz. The voice range also changed towards female tones, from 59–146 Hz to 148–343 Hz. Pitch elevation positively influenced the patient’s subjective voice assessment: total score of the Voice Handicap Index (VHI) improved from 99 to 19 points, and the score of its emotional sub-scale: 39 and 2 points, respectively. The described case of a surgical male-to-female voice change presents one of the dilemmas faced by modern medicine. (Endokrynol Pol 2016; 67 (4): 452–455)    Przedstawiono przypadek pacjentki transseksualnej, u której po raz pierwszy w Polsce przeprowadzono zabieg chirurgiczny zmiany głosu z męskiego na żeński. Głos ludzki — drugorzędowa cecha płciowa — jest odzwierciedleniem działania hormonów i psychiki. Fakt ten nabiera szczególnego znaczenia w transseksualizmie, zaburzeniu polegającym na niezgodności płci biologicznej z płcią psychiczną. Dla wielu osób transseksualnych, szczególne w postaci transseksualizmu M/K (mężczyzna/kobieta) po hormonalnej i chirurgicznej zmianie płci biologicznej ważnym problemem nastręczającym trudności w życiu codziennym pozostaje głos, gdyż leczenie hormonalne nie wpływa na feminizację krtani — aparatu głosowego. W opisywanym przypadku niski androfoniczny głos pacjentki był percepowany przez otoczenie jako męski. W celu feminizacji głosu wykonano leczenie fonochirurgiczne: skrócono fałdy głosowe o ponad 50% ich długości poprzez założenie szwów zespalających w ½ przedniej części głośni. W wyniku zabiegu podwyższono znacząco głos: przedoperacyjna częstotliwość głosu mówionego wyraźnie przesunęła się po operacji w górę z wartości 109 Hz do 209 Hz. Zakres głosu także zmienił się w kierunku tonów żeńskich z 59–146 Hz do 148–343 Hz. Zmiana wysokości głosu u pacjentki wpłynęła pozytywnie na jej subiektywną ocenę głosu: wynik kwestionariusza VHI (Voice Handicap Index) poprawił się z 99 pkt — przed operacją do 19 pkt — po operacji. Na poprawę jakości życia wskazuje także spadek problemów emocjonalnych związanych z głosem, ocenianych za pomocą podskali emocjonalnej VHI, której wynik wynosił odpowiednio: 39 pkt przed vs. 2 pkt po operacji. Prezentowany przypadek chirurgicznej zmiany głosu z męskiego na żeński, dokonany po raz pierwszy w warunkach polskich, przedstawia jeden z dylematów stawianych przed współczesną medycyną. (Endokrynol Pol 2016; 67 (4): 452–455)

Selected genetic factors increasing risk of neoplasia

Introduction: Neoplasia is defined as abnormal and excessive growth of selected tissue. Several factors, such as mutations in selected genes, can increase the risk of cancer expansion in human body. The aim of the article is to review the selected genetic factors which increase the risk of neoplasia and results of their presence in the human body. Material and methods: Articles in the Google Scholar, Pub Med database have been analysed using keywords: cancer, neoplasia, genetic factors, driver genes, cancer transformation, older people. Results: The aim of several genes is repairing damaged or dysfunctional DNA and preventing cells from abnormal or excessive. Mutations in selected genes cause inhibited production of the gene protein product or a change in its function, which increase the risk of neoplasia. The presence of mutated genes results in the initiation of the process leading to expansion of cancer cells in selected tissue. Moreover, a genetic mutation can lead to syndrome of tumors occurring in several organs. However, the increasement of cancer risk is related to numerous mutations, whereas the minority of carcinomas occur because of congenital gene defect and the majority is caused by environmental factors which contribute to creating various mutations. Conclusions: Thanks to the development of genetics in the field of medicine and introduction of genetic tests, the process of diagnosis of several tumors and syndromes is more efficient than in the past. The occurrence of mutation in genes, such as BRCA1, BRCA2, VHL, MSH2 and MLH1 and many more, relates to presence of selected tumors. By the introduction of pharmacogenetics, dozens of molecular-targeted drugs are used in the treatment of several types of cancers leading the achievement of therapeutic success. Nevertheless, the genetic background of many types of cancers is unknown and needs further study, as well as drugs targeting at selected genes mutations requires more development and guidelines in the treatment process. Keywords: cancer; neoplasia; genetic factors; driver genes; cancer transformation; older people

Гибридное моделирование фазоповоротных устройств в электроэнергетических системах

Работа посвящена моделированию фазоповоротного устройства (ФПУ) в составе электроэнергетических систем (ЭЭС). В работе теоретически обоснована невозможность решения проблемы всережимного моделирования в реальном времени и на неограниченном интервале ФПУ в ЭЭС с использованием исключительно численного подхода моделирования. Сформулирована в соответствии комплексным походом концепция решения проблемы. В соответствии с предложенной концепцией разработана структура и принципы построения средств реализации всережимного моделирования ФПУ в ЭЭС.The work is devoted to simulation of phase-shifting transformer (PST) as part of electric power systems (EPS). The work theoretically substantiates the impossibility of solving the problem of all-mode simulation of PST in EPS in real time and on an unlimited time by means of only numerical simulation approach. The concept of solving the problem is formulated in accordance with a comprehensive approach. In accordance with the proposed concept, the structure and principles for constructing means for implementing all-mode PST simulation in EPS are developed

Rehabilitation in scoliosis - an overview of the most important procedures

Introduction: Scoliosis is defined as deformation of the spine and torso in three dimensions. Study show that scoliosis affects 68% of healthy individuals over 65 years of age with no low back pain. The aim of this article is to review the available scoliosis rehabilitation methods, including the newest physical rehabilitation trends. Material and methods: Articles in the Google Scholar, Pub Med database have been analysed using keywords: scoliosis, deformation of the spine and torso, modern methods of rehabilitation, older people. Results: After skeletal maturity, curves less than 30°do not progress, however most curves greater than 50°continue to progress with approximate change of 1°per year. Bracing is one of the most popular options of scoliosis treatment. Braces usage aims to slow the progression of the curve. However, complications resulting from the physical changes caused by the compression of the body and/or psychological effects due to the disturbance of the appearance while wearing the brace may occure. The Lehnert-Schroth three-plane corrective breath method principles are: a proper breathing technique where the ribs are used as levers and the breath is directed to the unstretched parts of lungs allowing correction of the curvature of the spine, and secondly activation of non-working muscles on the side of the concave curvature. Nevertheless, surgical procedure is advised for curves greater than 45° in immature patients and greater than 50° in mature patients. Conclusions: Scoliosis, defined as spinal and torso deformity in three planes. 80% of all cases of this postural defect are juvenile idiopathic scoliosis (AIS). However, degenerative scoliosis developed during the patient’s life due to the degeneration of the discs of the spine is frequent in people over the age of 65. It often limits daily functioning and can cause severe pain that requires medical intervention. It has been proven that properly selected systematic rehabilitation may lead to significant improvement in the spinal alignment. Nevertheless, in severe cases surgical treatment may be necessary

Willingness to Adopt Biochar in Agriculture: The Producer’s Perspective

Most research on biochar has focused either on the mechanistic or the biophysical aspects, and there has been relatively little research into the social applicability and acceptance of biochar as a soil enhancer in agriculture. However, whether to adopt biochar in their practice is ultimately the farmers’ decision, and their willingness to do so is crucial. Here, we show the producer’s perspective on adopting biochar, using Polish farmers as a case study. Poland is an interesting case study because biochar has only recently attracted the attention of researchers, entrepreneurs, and other stakeholders there. We performed standardized, semi-structured interviews with 161 Polish farmers to evaluate the socioeconomic potential of biochar application in practice. We found that 27% of the respondents claimed to be familiar with biochar. The respondents with a technical, non-agricultural level of education were most familiar with the term ‘biochar’ (36%), followed by the group of respondents with a higher-level agricultural education (31%). It was surprising that among the latter respondents, the majority (69%) did not know the term ‘biochar’, either in the context used for this study or in any other context. Twenty percent of the respondents expressed an interest in using biochar, while 43% were not willing to adopt it in their agricultural practice (37% ‘did not know yet’). If a farmer was familiar with the concept of sustainable agriculture, the probability of familiarity with biochar increased by 16% (p < 0.05). In addition, farmers interested in using biochar indicated that sustainable agriculture might improve the financial situation of their farms (52%). The perceived benefits of biochar that drive the willingness to adopt it included improved soil quality and increased income due to increased yields, while the constraints on its adoption were associated mainly with high costs. Our results also point to the necessity of information flow as well as engaging farmers in participatory research to adjust the research to their needs. Furthermore, our results highlight the importance of transparency with the farmers and appropriate dissemination and presentation of both the positive and the negative aspects of biochar adoption. We urge those studying biochar to engage in more interdisciplinary research and to go beyond laboratory and field research. Many innovations, even those that work, will not be adopted if socioeconomic considerations are not incorporated into the research

Quality Assurance of Forensic-Toxicological Analysis: Selected Issues

In the present paper, recent trends in the formulation and application of quality assurance (QA) parameters in forensic toxicology, as well as the selected validated applications published in the last five years, are reviewed. In the first part, QA aspects of the analysis of toxicologically relevant compounds in various materials are presented. In particular, QA aspects of analysis of various matrices, like seized street drugs, formalin fixed tissues, dried blood spots, oral fluid, hair, and nails are reviewed. The second part is devoted to identification as applied in general, untargeted and targeted screening; regulations and recommendations issued on international and national levels are presented in the third part, whereas existing QA programs applicable for forensic analysis are discussed in the fourth part