Science teaching is often seen as complex. It is necessary to use different methodologies to facilitate understanding. According to the literature in the area, experimentation is relevant for teaching science to unite theory with practice, facilitating student understanding and the practice of teaching. This study proposes to analyze the use of experimentation as a pedagogical tool used in the teaching-learning process of teaching Natural Sciences, with the aim of gathering and synthesizing similar characteristics in publications in relation to the use of experimental activities in teaching Science in high school. Seeking to identify the methodological conceptions of teachers who are publishing on the concept of experimentation in science teaching, relating the possible contributions to the teaching-learning process, in addition to verifying the main results achieved by this use, within the scope of science teaching. To achieve this, this study was based on a systematic review with qualitative meta-synthesis of works from the existing literature. Using the methodological process proposed by Kitchenham et al. (2007), on scientific productions: theses and dissertations that referred to the topic, published between 2019 and 2023. The field of this investigation was composed of 438 texts initially found, in the 2 databases: Portal Capes (253), Biblioteca Brazilian Digital Theses and Dissertations (BDTD) (185). The publication period analyzed was from 2019 to 2023, all of which were national literature. After data collection, 31 studies were selected and analyzed in full. As a result of this study, it was possible to infer that the use of experimentation as a pedagogical tool helps in the teaching-learning process in a significant way, arousing the interest of students, motivating them to seek problem resolutions in a critical and active way, configuring relevant to the teaching-learning process and, therefore, to effective teaching practice regarding the construction of scientific knowledge in the secondary education stage.

Soils hosting the plantations of two forest species threatened with extinction, Pericopsis elata Harms Van Meeuwen (Fabaceae) and Entandrophragma cylindricum Sprague (Meliaceae), were compared to determine the effects of four silvicultural methods, Layon, Blanc-Etoc, Martineau and assisted forest management (FAM), setteled in 1938 in Yangambi, following Split Plot statistical layout. A resilient management method would combat deforestation through shifting agriculture and forest degradation, thus rationally preserving Yangambi Biosphere Reserve (RBY). It turned out that for the two acid-tolerant forest species as compared to mixed forest control (FM), acidifying parameter values have significantly characterised 0-10cm soil depth ranges under silvicultural treatments. Under Pericopsis elata, Martineau has increased effective exchange cation capacity (ECEC) with 10.7 meq/100g, Blanc Etoc increased exchangeable acidity to 5.60meq/100g, FAM increased available phosphorus to 15.46 ppm and silvicultural plantaions decreased calcium with 0.26-0.4 meq/100g. Under Entandrophragma cylindricum, silvicultural methods have increased pHKCl to 3.21-3.32, pHH2O 3.75-4.35 and increased potassium 0.105-0.135meq/100g. They decreased nitrogen to 0.13-0.15%, carbon 1.51-1.98% and phosphorus 5.16- 13.98ppm; while Blanc Etoc increased ECEC to 6.2 meq/100g and exchangeable acidity to 5.71 meq/100g. For the three soil depth ranges (0-10cm, 10-30cm and 30- 50cm), the silvicultural plantation soils under the two forest species are less weathered, so deficient in clay and silt. Soil parameters synchronized with the two species dendrometries will determine an appropriate silvicultural method.

Background: Hemoptysis is the coughing up of blood from the tracheobronchial tree. Hemoptysis is most often a manifestation of lung diseases. The etiology of hemoptysis can also be extra-pulmonary. A certain number of cases are idiopathic. The gold standard in the diagnosis is computed tomography, pulmonary angiography, and aortography. The treatment of hemoptysis is the treatment of the underlying disease and, if necessary, bronchoscopy. Methodology: This study examines 235 patients presenting with hemoptysis at the Emergency Center of Serbia, University Clinical Center, focusing on demographics, comorbidities, diagnostic procedures, and treatment outcomes. Patients underwent thorough clinical evaluation and laboratory tests, with an emphasis on distinguishing pulmonary from non-pulmonary causes. Descriptive and inferential statistics were employed to analyze the data, revealing significant findings. Results: Results showed a male predominance (62.1%) with an average age of 60.9 years. Comorbidities, particularly arterial hypertension, were prevalent. Chest imaging, including X-rays and CT scans, aided in diagnosing conditions such as pulmonary thromboembolism and malignancy. Logistic regression highlighted predictors for outpatient treatment, including higher hemoglobin levels and non-pulmonary etiology. Bronchoscopy was performed in 23.8% of cases, revealing varied findings, including active bleeding, inflammation, and bronchiectasis. Notably, uncontrolled arterial hypertension emerged as a leading cause of hemoptysis. Patients with pulmonary causes exhibited distinct clinical and laboratory profiles compared to those with non-pulmonary etiologies. Conclusion: This study underscores the heterogeneity of hemoptysis etiologies and the critical role of thorough evaluation in guiding treatment decisions. Understanding the differences in clinical characteristics and laboratory results between pulmonary and non-pulmonary causes informs optimal management strategies and balancing outpatient vs. inpatient care.

The study investigated the role of work experience on institutional policy framework, access and utilization of Technology Enhanced Learning (TEL) tools among TVET teachers in Nigerian tertiary institutions. Two research questions and two null hypotheses guided the study. The sample for the study was 318 teachers from six tertiary institutions that offer Vocational and Technical Education programmes in Nigeria. Instrument for data collection was developed by the researchers and was validated by five experts in Vocational and Technical Education. The overall reliability index of the instrument was 0.81. Results from collected data revealed that many institutional policy frameworks run in TVET institutions do not promote technology enhanced learning; there is a positive relationship between access to TEL resources and years of experience; gender does not play a significant role in the use and access to TEL tools. It is recommended that TVET institutions should draw up policies that encourage TEL use; and engage teachers with TEL as they advance in their professional experiences, irrespective of gender.

Multiple biomarkers pave the way for diagnosis of periodontal disease and to determine the disease prognosis. Thus, biomarkers have substantial application in disease diagnosis, prognosis, and therapeutics. Quantification of levels of cytokines as well as other biomarkers in conditions like periodontitis and peri-implantitis help in identifying ongoing pathological processes because research has revealed that the intensity of periodontal disease is related to the level of the biomarker. Furthermore, identification of the status of ongoing disease activity maybe hastened using chairside diagnostic kits which utilize specific biomarkers as their basic analytical element. Multiplex arrays that identify multiple biomarkers from a single sample are useful to arrive at unambiguous diagnosis as compared to single biomarker assays. Understanding and comparing the various assays and arrays available, along with the overall knowledge of their working principles and characteristics, help in categorically choosing specific assays or arrays. This review gives an overview of the diagnostic assays and arrays used in periodontics with a focus on application of multiplex arrays in periodontology.

Background: Cervical insufficiency is due to congenital or acquired factors that lead to pathological dilation or relaxation of the cervix, which in turn leads to miscarriage or premature delivery. Cervical cerclage is one of the important methods to treat cervical insufficiency. It is divided into two methods namely transvaginal and transabdominal. Transabdominal approach is further divided into laparotomy and laparoscopy. When the gestational age is large, prophylactic cervical cerclage is mostly performed by transvaginal approach though very little cervical cerclage centers implement the laparoscopic approach. Objective: This study aimed to compare pregnancy outcomes after vaginal and laparoscopic cervical cerclage in patients with cervical insufficiency due to large influx of patients with larger gestation ages. We also compared the pregnancy outcomes for laparoscopic and transvaginal cervical cerclage at older gestational ages. Methods: This is a retrospective study of patients who underwent cervical cerclage surgery at our center from January 2019 to June 2022. Maternal outcomes were gestational age at delivery, miscarriage, prematurity, term pregnancy, cervical laceration, mode of delivery, and premature rupture of membranes. Neonatal prognosis includes neonatal survival rate, neonatal admission rate, neonatal respiratory support, Apgar score and neonatal weight. We analyzed the pregnancy outcomes of laparoscopic and transvaginal cervical cerclage, as well as the different pregnancy outcomes of the two cervical cerclage procedures after 12 weeks of gestation. Results: A total of 129 cases of singleton pregnancies were identified as eligible for inclusion in the study, and all of them underwent cervical cerclage during pregnancy. laparoscopic group (n = 86) and transvaginal group (n = 43). Results of laparoscopic group and transvaginal group: postoperative infection (4.65 vs 23.3%), gestational age at delivery (mean±SD) (36.23±3.13) vs (33.26±4.52), miscarriage (3.49% vs 16.28%), Premature birth (28-32 weeks) (1.16% vs 9.30%), Preterm birth (32-37 weeks) (26.74% vs 44.19%), Full-term pregnancy (67.44% vs 30.23%), Neonatal survival rate (97.67% vs 88.37%), neonatal admission rate (17.86% vs 53.49%) and neonatal respiratory support (3.49% vs 16.28%); P<0.05. The results of the laparoscopic group and the transvaginal group after 12 weeks of pregnancy: postoperative infection (7.14% vs 23.53%), premature birth (28-32 weeks) (32.14% vs 47.00%), premature rupture of membranes (0.00 vs 8.82%), time to termination of pregnancy (mean±SD) (36.38±2.38) vs (32.84±4.45), neonatal survival rate (98.21 vs 88.24%), neonatal admission rate (16.36 vs 60.00%); P<0.05. Conclusions: Laparoscopic cervical cerclage is a more effective treatment for patients with cervical insufficiency and is associated with better pregnancy and neonatal outcomes compared with transvaginal cervical cerclage. For patients with older gestational ages, laparoscopic cervical cerclage may have better satisfactory results.

This article examines the direct effects of Information and Communication Technologies (ICT) on economic growth in the presence of four important indicators: the rates of Internet, telephone, and mobile usage, as well as the proportion of technologically-related imports in total imports. In order to achieve our stated objectives, we undertake a rigorous evaluation of the interaction impact between the ICT factors, human capital, and financial development for the four specifications that are under consideration. A comparison analysis between the OECD countries and those of the MENA area was conducted between 2010 and 2023, employing the generalized moment's method in dynamic panels. Our findings demonstrate that the impact of ICT is predominantly influenced by financial and human capital growth. This study reveals that OECD countries have been more proactive and effective than MENA countries in embracing ICT to foster economic growth. Examining the case of MENA countries provides comprehensive insight for policymakers regarding the relevance of ICT in boosting economic growth through the advantages of technology expansion. JEL classification : O32, O33, O47, O57.

In the era of Industry 4.0, chemistry education requires innovative approaches to meet the demands of the Merdeka Curriculum. This study centers on the development of creative content as a solution to the complexities of chemistry education, specifically for first-year chemistry students at the State University of Padang. Utilizing the Plomp development model, this research formulated a method based on the Flipped Classroom paradigm with a Guided Inquiry Syntax. Validations from five Chemistry lecturers at UNP yielded a construct validity rate of 0.81 and a content component rate of 0.80. This indicates that the resultant content is not only innovative but also possesses material depth that's pertinent. The practicality of the content achieved a value of 90%, suggesting its ease of application and relevance for students. Effectiveness data showed an increase of student score test highlighting the improvements before and after the implementation of the creative content. Moreover, the systematic presentation ensures the content's efficacy in enhancing students' understanding of the Periodic System. The creative content was delivered through the Discord platform, allowing for asynchronous communication and collaboration. Students engaged actively with the content, participating in discussions, polls, and quizzes. The use of Discord provided flexibility, enabled sharing of resources, and promoted student-centered learning.Quantitative data analysis indicated a significant increase in post-test scores compared to pre-test scores after the intervention. Qualitative findings from interviews and observations revealed positive student perceptions of the creative content and Discord integration. Students reported increased motivation, enjoyment, and self-directed learning. This research successfully addresses the prevailing challenges in chemistry education, offering solutions that are valid, practical, and effective. Here, creative content emerges not just as a teaching tool, but as an innovative strategy underpinning modern chemistry education. The Flipped Classroom model combined with Guided Inquiry empowered students to construct knowledge actively. Meanwhile, the use of Discord provided an interactive digital space optimizing engagement. As conclusion, this study demonstrates the value of student-centered pedagogies and technology integration in enhancing chemistry learning. The creative content and Discord platform fostered increased understanding of complex concepts like the Periodic Table. The approach taken enables students to develop higher-order thinking skills vital for the 21st century. This has broad implications for reforming chemistry education to be more relevant and responsive to contemporary needs. Further research can explore the long-term impacts on learning outcomes. Overall, the study provides an exemplar for learner-focused instructional design in the digital era.

BACKGROUND: As the author`s country adheres to the basic national policy of opening to the outside world, persists in opening the country, and gradually increases the exchanges with the outside world, the society`s demand for compound translators is relatively increasing, and the work of Business English translation teaching has become more important. Therefore, the reform of Business English translation teaching puts forward higher requirements for translation teaching. OBJECTIVE: Studies have found that translation teaching has an important impact on the workload and work pressure of newcomers to the translation teaching industry, as well as the mental health of the new generation of translators. This not only has important value for studying the mental health of translation teachers, but also can make young Business English Translation teachers have a better understanding of the industry they are engaged in, which helps to properly handle various problems at work and reduces the psychological pressure on translators brought by Business English translation teaching and the impact of their own mental health. METHODS: This article uses the Psychological Stress Scale for Business English Translation Teaching Work and the Mental Health Self-Assessment Scale to analyze and summarize the information obtained by the newcomers to the translation teaching industry in Guangxi through questionnaire surveys. RESULTS: Newly recruited translators have higher scores on the psychological pressure of Business English translation teaching, which shows that the psychological pressure of newly recruited translators is relatively high. There is a significant correlation between the mental health of newly recruited translation teachers and the psychological pressure they feel in Business English translation teaching. CONCLUSIONS: In order to solve the problems encountered in the work, reduce the psychological pressure caused by Business English translation teaching, and improve the psychological and physical quality of young teachers, young teachers should know their own profession from many aspects and master its characteristics.

The creative accounting or as some call it \"innovative or creative accounting\", receives great importance at the current time for the development in information technology (IT) and communication, the various economic organization and corporations go through, nevertheless of their form activity and size as well as their openness on the world markets, furthermore, the appearance of many difficulties and problems encounter these corporations that need unconventional or monotonous solution, that the facilitator, the executive, or the accountant should find. Hence, it is essential for the accountant, the facilitator or the financial auditor cope with the latest developments, find creative and innovative solutions for this problem and assist the organization in making appropriate decisions. Rey work (creative accounting, information technology or IT, disclosure standard, financial analysis).

This investigation present a new method for reducing electrical field in power ‎electrical substation and also it has been paid attention to health personnel who ‎work in this place therefore the health of staff has been a priority. In this way ‎we have measured RMS values of electrical field by a standard device for ‎variety level of voltage and various distances in a common prototype power ‎electrical substation. Measured values have been prepared in this manuscript. ‎In the following paragraphs these results were compared with International ‎Commission on Non-Ionizing Radiation Protection (ICNIRP) standards and ‎was observed some zones are in higher than standard, so for solving this issue ‎we have done review of basic design in substation and present a new method. ‎we simulated this plan in COMSOL multi physics software and optimized ‎design for achieving standard value of electrical field dosage is achieved and ‎leads to more safe operating area regarding to biological considerations.‎

Abstract\nBackground and Objectives: Despite the advantages of digital radiography, use of this imaging modality is challenging in terms of infection control in dentistry. Compared to conventional X-ray films, digital receptors are reusable, and cannot be sterilized. This study aimed to compare the effectiveness of two types of commercially available photostimulable phosphor plate (PSP) protective barrier envelopes to prevent microbiological contamination.\nMaterials and Methods: In this cross sectional study, 80 barrier envelopes were tested in 40 volunteers. The PSP plates were placed individually in Asia Teb and Soredex protective barrier envelopes and were placed in the mouth for two minutes, similar to periapical films. The protective barrier envelopes were then removed under sterile conditions and the sensors were placed on different culture media. The number of colonies on each plate was counted. Data were analyzed using SPSS via McNemar and Wilcoxon tests.\nResults: Of 80 samples, bacterial growth was noted in 17.5% of PSPs with Soredex and 32.5% of PSPs with Asia Teb barrier envelopes. Gram-positive bacilli were the most commonly isolated bacteria. The difference between the Asia Teb and Soredex barrier envelopes for protection of microbiological contamination was not significant (P>0.05).\nConclusion: Use of different types of protective barrier envelopes is not sufficient for prevention of microbiological contamination of PSP plates and some adjunct modalities are required to decrease microbiological contamination of PSP plates

In recent times Security has started to be the key factor in data transmission. Recent advances in networking and wireless sensing has enabled the discovery in networking and wireless sensing and has enabled the discovery of new algorithms and techniques for wireless sensor networks. A Wireless Sensor Network (WSN) comprises several sensor nodes such as magnetic, thermal, and infrared and the radar is setup in a particular geographical area. The capabilities of WSN include to manipulate and control the physical and environmental entities such as – humidity, temperature, sound, pressure, light etc. and pass this information to various other sensors present in the network in order to pass the information from the source to the sink. These wireless sensor networks have diverse applications ranging from medical care to military or educational purposes but these networks are also prone to many adversaries and attacks. Some of the most common attacks on a wireless sensor network are spoofing or replayed routing information. Certain techniques and algorithms have been introduced or developed which might not make a WSN attack-proof in all situations but may be very affective in certain situations. Selective forwarding attack is one of the most harmful attack as it can harm the complete network. A selective forwarding attack is a type of attack in which the nodes capture some data by interfering in the transmission path and steal some precious information which could be anything from secret passwords to encrypting keys and pass the rest to the destined node. The ability of capturing the required data and passing the rest of the information to the sink makes it undetectable in a network. In WSN certain techniques and algorithms have been introduced to detect selective forwarding attacks.

The neurons in the human brain continuously produces different waves of different frequencies. These signals can be recorded by the EEG (Electroencephalograph) device which is like a headset fixed on the skull. Along with the five types of signals there are many unwanted signals which can be called as the noise signals are produced, as these noise signals cause various types of hindrances in the field of diagnostics (both medical and non-medical), hence these signals have to be removed that from the original signal. This paper illustrates the attempts made by various researches to minimize the noise interference through the process of signal classification and other principles of signal processing

The electrical impulses in the brain represents complex neural activities that produces brainwaves. The brainwaves which are recorded by the EEG (Electroencephalograph) device can be used to gain useful information about the state of the brain and how it’s affected in different conditions. These can also be used to map the thought process of the subject who is incapable of conveying the produced thoughts in a normal humanly fashion. The classified brainwaves can be obtained through the various classification process which form the base of the brain computer interface. This paper investigates some of the successful brain computer interfaces and presents a general analysis of the methodologies used in their construction

Bacteriocins are proteinaceous toxins produced by bacteria to inhibit the growth of similar or closely related bacterial strains. They are antibiotic-like agents, ribosomally synthesized antimicrobial peptides encoded in the plasmids, chromosomes or transposons. Fermented Parkia biglobosa seeds (African locust bean) were screened for bacteriocin-producing lactic acid bacteria (LAB) with the characterization of putative bacteriocins. Bacteriocin-producing lactic acid bacteria (LAB) were identified by 16s rDNA sequencing. Molecular sizes of the bacteriocins were determined using the tricine-sodium dodecyl sulphate-polyacrylamide gel electrophoresis (tricine-SDS–PAGE) and effects of enzymes, pH, detergents and temperature on bacteriocin activity investigated, using standard procedures. Bacteriocins’ production and activities were measured by spectrophotometric analysis. Statistical analysis was carried out using student t-test and Analyses of Variance. Bacteriocigenic LAB isolated were Lactobacillus plantarum Z1116, Enterococcus faecium AU02 and Leuconostoc lactis PKT0003. They inhibited the growth of both Gram-positive and Gram-negative bacteria. The sizes of bacteriocins Z1116, AU02 and PKT0003 were 3.2 kDa, 10 kDa and 10 kDa, respectively. The synergistic effects of characterized bacteriocins and rifampicin tested on organisms showed significant differences (P < 0.05), as compared with the effects of only one of the two. The antimicrobial activity of the three bacteriocins was deactivated after treatment of the cell-free supernatants with proteinase K, papain, pepsin and trypsin. Parkia biglobosa seeds are, therefore, rich in LAB bacteriocins which could be explored. The biosynthetic mechanisms of LAB bacteriocins could be employed in food safety and security, preservation, peptide design, infection control and pharmacotherapy. This should help in the control of undesirable bacteria and in designing more potent and selective antimicrobial peptides.