Natural Form Research Articles

Biological Features of <i>Tenebrio Molitor</i>, <i>Zophobas Morio</i> and <i>Hermetia Illucens</i> Larvae as the Source of Feed Protein for Animals

Introduction. Due to the world’s population growth, the need for food products increases. The only way to solve the problem is to develop the animal husbandry, poultry and fish farming, which are currently facing the acute deficit of protein feedstuff. Due to the chemical composition, the larvae of the yellow mealworm (Tenebrio molitor) beetle, zofobas (Zophobas morio) beetle and the black soldier fly (Hermetia illucens) could be efficiently used in the compound feed production. Therefore, our research aims at the comparative study of the biological features of the above insects and their larvae in the context of improving the technology of the new types of feed protein production.Materials and Methods. The research was conducted by comparing the biological features of the following insects: Tenebrio molitor, Zophobas morio and Hermetia illucens.Results. The specific temperature conditions in the native ranges of the studied insect species were revealed. That could benefit the larvae artificial rearing technology. The aspects of the natural fodder base influence on the formation of the larvae nutrient medium upon their rearing for feed protein production were determined. The larvae growth intensity of the studied insect species was compared.Discussion and Conclusion. The study of Tenebrio molitor, Zophobas morio and Hermetia illucens biological features brought us to the conclusion that using their larvae as feed protein in production of the compound feed is expedient. Based on the chemical composition features of the above larvae, both in their natural and protein feed flour form, they can be recommended for feeding the valuable fish species, poultry, pigs and small domestic animals.

Statistical Design of Eco-Friendly Mortar Mixtures Containing Scheelite Tailings and Quartzite Sand: Evaluation of Resistance to Alkali-Aggregate Reaction

This study focuses on addressing the challenge of society’s consumer demands through sustainable production processes, as outlined by Sustainable Development Goal 12 established by the United Nations. In this context, this study aims to assess the durability of eco-friendly mortars with mineral waste as alternative raw materials, considering the alkali-aggregate reaction (AAR). For this purpose, scheelite tailing (ST) was used to partially replace Portland cement (PC), and quartzite sand (QS) was used to fully replace conventional sand. The ST was ground and sieved (<75 μm), and part of it was used in its natural form, while the other part was calcined (1000 °C for 1 h). A mixture experimental design was created to select the compositions with the best mechanical performance. All the mortar mixtures were produced with a cementitious material to QS ratio of 1:3. Three mortar compositions (0% ST, 30% natural ST, and 30% calcined ST) were selected to study the resistance to the AAR. Linear expansion measurements, compressive strength tests, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy were conducted to evaluate the phases formed and the mechanical behavior of the mortars in relation to the AAR. The expansion results demonstrated that QS does not exhibit deleterious potential. Regarding the use of ST, the results indicated that it is possible to partially replace PC with calcined ST without significantly compromising the mechanical performance and durability of the mortars. However, the use of non-calcined ST is not recommended, as it presents deleterious effects on the mechanical properties of the mortars. This study highlights a new sustainable mortar alternative for use in construction without future degradation of its properties.

Update and Trends in Breast Reconstruction After Mastectomy

Due to refinements in operating techniques, autologous breast reconstruction has become part of standard care. It has become more difficult to advise patients due to the expansion of oncologic options for mastectomy, radiation therapy and the variety of reconstructive techniques. The goal of reconstruction is to achieve oncologically clear margins and a long-term aesthetically satisfactory result with a high quality of life. Immediate reconstruction preserves the skin of the breast and its natural form and prevents the psychological trauma associated with mastectomy. However, secondary reconstructions often have a higher satisfaction, since here no restitutio ad integrum is assumed. Alloplastic, i. e., implant-based, breast reconstruction and autologous breast reconstruction are complementary techniques. This article provides an overview of current options for breast reconstruction including patients' satisfaction and quality of life following breast reconstruction. Although immediate reconstruction is still the preferred choice of most patients and surgeons, delayed reconstruction does not appear to compromise clinical or patient-reported outcomes. Recent refinements in surgical techniques and autologous breast reconstruction include stacked-flaps, as well as microsurgical nerve coaptation to restore sensitivity, which lead to improved outcomes and quality of life. Nowadays Skin-sparing and nipple-sparing mastectomy, accompanied by improved implant quality, allows immediate prosthetic breast reconstruction as well as reemergence of the prepectoral implantation. The choice of breast reconstruction depends on the type of mastectomy, necessary radiation, individual risk factors, as well as the patient's habitus and wishes. Overall, recent developments in breast reconstruction led to an increase in patient satisfaction, quality of life and aesthetic outcome with oncological safety.

A Review on Nutritional Properties and Health Benefits of Finger Millet

Finger millet (Eleusine coracana) is one of the important small millets with high nutraceutical value in the world. Most of the millet farmers attracted by Finger millet cultivation due to its wide adoptability in different soil types and climate. It also grows well in hot climates with short rainfall periods and cool climates with warm millets. A multitude of small farmers grow finger millet with limited water resources and in many countries this crop is often referred to as “poor people's crop”. The grains of finger millets are very small in size with brown, light brown and white in colours based on different cultivars. The white cultivars have been developed mainly for the baking industry, the brown and light brown types used for porridge while the brown cultivar is utilized for brewing traditional opaque beer in Southern Africa. Finger millet has the highest source of calcium and iron when compared to the other cereals. Finger millet contains high concentration of carbohydrates, dietary fibre, phytochemicals and essential amino acids; presence of essential minerals; as well as a gluten‑free status. Diet is a major focus of public health strategies aimed at maintaining optimum health throughout life, thus preventing early onset of chronic diseases as well as promoting healthier ageing. Many researchers have described that finger millet helps in natural weight loss, strengthens bone, prevents diabetes, prevents anti-ageing, maintains blood pressure levels, protects from disease, improves in hemoglobin status in children etc.,. Studies on the different properties of foods have shown that consumption of certain foods may provide greater health benefits. Finger millet is not only used for human consumption, but it is also used as feed for cattle and birds. Finger millet is used in the preparation of different foods both in natural and malted forms, like porridge, puddings, pancakes, biscuits, roti, bread, noodles, and other snacks. Besides this, it is also used as a nourishing food for infants when malted and is regarded as wholesome food for diabetic patients. Therefore, necessary need to needs to increase production and productivity through various improved technologies to meet our requirements in future and also strengthen public distribution system for achieving nutritional security.

Bioactive Phenolic Compounds from Apples during Simulated In Vitro Gastrointestinal Digestion: Kinetics of Their Release

Bioactive phenolic compounds in their natural form show beneficial effects on the gastrointestinal system. The kinetics of their release are important for understanding those effects. The aim was to study the kinetics of the release of phenolic compounds from apples during in vitro simulated gastrointestinal digestion by using modified equations of first- and second-order kinetics. 35% and 67% of total phenolic compounds were released in the gastric phase, and 26% and 27% in the intestinal phase (peel and flesh, respectively). Intensive release of anthocyanins, flavan-3-ols, dihydrochalcones, phenolic acids, and flavonols occurred in the first 10 min of gastric digestion. In intestinal digestion, flavan-3-ols and anthocyanins were not identified; the dihydrochalcone amount decreased, while phenolic acids and flavonols showed stability. Concentrations at the endpoint of the release (c∞) were determined with kinetic equations fitted well to the experimental data (cexp) (r2 = 0.9973 and 0.9946 for first- and second-order). The half-life for released phenolic subgroups in gastric digestion was up to 3.5 (first-order kinetics) or 2.5 min (second-order), or in intestinal digestion up to 20.9 (first-order) or 32.3 min (second-order). Modified equations reported here for the first time fit well with the experimental data.

Sensing and differentiation between normal flora and pathogenic of E.coli Bacteria using 410 nm diode laser

Abstract: Background: Optical biosensors offer excellent properties and methods for detecting bacteria when compared to traditional analytical techniques. It allows direct detection of many biological and chemical materials. Bacteria are found in the human body naturally non-pathogenic and pathologically, as they are found in other living organisms. One of these bacteria is Escherichia coli (E. coli) which are found in the human body in its natural and pathogenic form. E.coli bacteria cause many diseases, including Stomach, intestines, urinary system infections, and others. The aim of this study: is sensing and differentiation between normal flora and pathogenic E.coli. Material and method: The optical biosensor constructed of a multi-mode – no core- multi mode optical fibre that differentiates between pathogenic and non-pathogenic bacteria of E.coli by measuring the changing for light intensity using source of light 410nm laser diode. Multi-mode - no core - multi-mode optical fibre (MM-NOC-MM) connected to the OSA analyser (HR2000) by means of an adapter and finally connected to a computer to show the results. Results: The intensity of the transmitted light recorded in the case of pathogenic bacteria is less than the intensity of the transmitted light recorded in the case of non-pathogenic bacteria. Conclusion: these results were obtained because of the ideal and better choice of the wavelength of the laser used with its absorption E.coli bacteria.

Paracausal deformations of Lorentzian metrics and Møller isomorphisms in algebraic quantum field theory

Given a pair of normally hyperbolic operators over (possibnly different) globally hyperbolic spacetimes on a given smooth manifold, the existence of a geometric isomorphism, called Møller operator, between the space of solutions is studied. This is achieved by exploiting a new equivalence relation in the space of globally hyperbolic metrics, called paracausal relation. In particular, it is shown that the Møller operator associated to a pair of paracausally related metrics and normally hyperbolic operators also intertwines the respective causal propagators of the normally hyperbolic operators and it preserves the natural symplectic forms on the space of (smooth) initial data. Finally, the Møller map is lifted to a *-isomorphism between (generally off-shell) CCR-algebras. It is shown that the Wave Front set of a Hadamard bidistribution (and of a Hadamard state in particular) is preserved by the pull-back action of this *-isomorphism.

FAT10 differentially stabilizes MYPT2 isoforms

Myosin phosphatase (MP) is an enzyme complex that regulates muscle contraction and plays important roles in various physiological and pathological conditions. Myosin phosphatase targeting subunit (MYPT) 2, a subunit of MP, interacts with protein phosphatase 1c to regulate its phosphatase activity. MYPT2 exists in various isoforms that differ in the composition of essential motifs that contribute to its function. However, regulatory mechanisms underlying these isoforms are poorly understood. Human leukocyte antigen-F adjacent transcript 10 (FAT10) is a ubiquitin-like modifier that not only targets proteins for proteasomal degradation but also stabilizes its interacting proteins. In this study, we investigated the effect of the interaction between FAT10 and MYPT2 isoform a (the canonical full-length form of MYPT2) or MYPT2 isoform f (the natural truncated form of MYPT2). FAT10 interacted with both MYPT2 isoforms a and f; however, only MYPT2 isoform f was increased by FAT10, whereas MYPT2 isoform a remained unaffected by FAT10. We further confirmed that, in contrast to MYPT2 isoform a, MYPT2 isoform f undergoes rapid degradation via the ubiquitin-proteasome pathway and that FAT10 stabilizes MYPT2 isoform f by inhibiting its ubiquitination. Therefore, our findings suggest that the interaction between FAT10 and MYPT2 isoforms leads to distinct stabilization effects on each isoform, potentially modulating MP activity.

Land use land cover change and its implication on water fowl diversity: A case study of Taudaha Lake, Kathmandu, Nepal

The wetlands of Nepal are well known for unusually rich biodiversity. Taudaha is famous for winter migrant water fowls as far as from Siberian. The natural form of Taudaha has been neglected and it is surrounded by concrete homes instead of trees and paddy field. Land use change is often regarded as one of the main reasons for habitat degradation and subsequent decrease in migratory birds’ population. This article aims to quantify the land use change scenario in and around the lake area using GIS tool. Google images from February 2004 and April 2022 were obtained from “Google Earth Pro” software and used to prepare the land use map by using “QGIS 3.12” software. The cultivated land covered about 73.42% of the total study area followed by settlement (8.61%), vegetation (8.02%) and the lake (9.95%) itself in 2004. But 18 years later, in the year 2022, Taudaha is gradually surrounded by urban areas. The cultivated land has been changed to be settlement areas. The cultivated land has decreased for construction of houses, hotels and resorts. Human activities in hotels and resorts near the lake area have caused distraction to migratory birds visiting the lake. This is causing degradation of habitat of the migratory bird species. Literatures showed the declining number of migratory bird species visiting the lake areas during winter.

A Hitchhiker's Guide to Problem Selection in Carbohydrate Synthesis.

Oligosaccharides are ubiquitous in molecular biology and are used for functions ranging from governing protein folding to intercellular communication. Perhaps paradoxically, the exact role of the glycan in most of these settings is not well understood. One reason for this contradiction concerns the fact that carbohydrates often appear in heterogeneous form in nature. These mixtures complicate the isolation of pure material and characterization of structure-activity relationships. As a result, a major bottleneck in glycoscience research is the synthesis and modification of pure materials. While synthetic and chemoenzymatic methods have enabled access to homogeneous tool compounds, a central problem, particularly for newer synthetic chemists, is the matter of problem selection. This outlook aims to provide an entry level overview of fundamental principles in carbohydrate chemistry with an eye toward enabling solutions to frontier challenges.

Anti-Inflammatory And Therapeutic Activities of Omega-3-Polyunsaturated Fatty Acid Oil Extract on Acute Inflammation in Animal Models.

Background: When prescribing painkillers for acute, chronic, and degenerative pain disorders, one must take into account safety issues for continuous long-term use of anti-inflammatory drugs due to the side effects. As a result, the therapeutic safety of anti-inflammatory supplements utilizing natural forms, such as omega -3 fatty acids (n-3 fatty acids), is more important than its effectiveness. Method: The nutritional intervention of n-3 fish oil extract (owing to its eicosapentaenoic acid, EPA, and docosahexaenoic acid, DHA contents) in experimental animal for acute inflammatory models was investigated in this work using standard methods (Carageenan, Arachidonic acid, and PGE2). Result: Results obtained demonstrated a notable reduction in inflammation caused by fish oil due to its EPA and DHA content. For groups 1, 2, 3, 4, and 5, the percentage inhibition of the carrageenan-induced paw edema inflammation after 24 hours was 78.57%, 57.14%, 50.00%, 100.00% and 92.85%, respectively. Arachidonic acid-induced ear edema was inhibited by 30, 24, 27, 37, and 40%, whilst the PGE-2 test was inhibited by 44.16, 52.48, 61.34, 74, and 80.05%. Conclusion: The findings demonstrated that eicosapentanoic acid (EPA) and docosahexanoic acid (DHA), the active components in omega-3 polyunsaturated fatty acids, have the ability to disrupt the prostaglandin metabolic pathway by competing with arachidonic acids for the COX active site and thereby inhibiting their synthesis. The novelty of the work is demonstrated in the use of diet instead SAIDs to resolve inflammation.

Following miss Costa: Examining digital natures through a shark with a twitter account

This paper aims to make sense of Miss Costa, a female white shark with a Twitter account. In 2016, she was captured, tagged and released off of Nantucket, Massachusetts by a relatively new non-profit organization called OCEARCH. OCEARCH named Miss Costa after a corporate sponsor (Costa sunglasses) and created a Twitter account under her name. Today, @MissCostaShark has over 18,000 followers and tweets regularly. Tweets often include screenshots of maps showing where Miss Costa has recently been in the ocean, information that is available because OCEARCH fitted her with acoustic, accelerometer, and ‘smart position and temperature transmitting’ (SPOT) tags. Throughout the paper we trace and critically consider practices of following Miss Costa, from researchers and environmentalists that seek to catch, tag and test her, to digital storytellers and other media purveyors that want to photograph, record and ‘share’ her virtually; to online audiences who watch her movements and like and retweet ‘her’ stories, experiences and opinions. We argue that the novel and specific combination of digital technologies and practices used by OCEARCH (animal tracking and social media) constructs Miss Costa as a form of digital nature that is individualized and spectacularized. The resulting effects on shark science, ocean conservation and human audiences are far from straight forward and demand critical attention.

Comparative evaluation of fracture resistance of re-attached teeth using self-adhesive bioactive flowable composite after preconditioning the fractured coronal fragments with different remineralizing agents

One of the common forms of dental injury is anterior crown fractures, which mainly affects the teenagers and young adults. Fractures of the coronal portion of the permanent incisors characterize 18–22% of total traumatic injuries to dental hard tissues; of which 96% of them comprise the maxillary incisors. Uncomplicated fracture of crown is one of the most common types of dental traumatic injury. Dental trauma has an emotional impact on the patient’s overall health and can serious harm to the dentition. The treatment as well as prognosis of the fracture of coronal portion is a major challenge for a dentist because it has to accomplish various parameters like need to obtain an aesthetical result that approaches itself to its natural form and measurement, opaqueness and translucency of the original tooth structure in obtaining a effective restoration. It is suggested that reattachment of the fractured fragment is the best procedure for restoring an uncomplicated fracture of a crown, if a fragment is present. Reattachment of the fractured fragment offers major advantages over the conventional composite restoration. In reattachment, enhanced aesthetics is obtained because enamel’s true shape, colour, intensity, and surface texture are preserved. It re-establishes the major function and produces the favourable emotive and social response from the side of the patient. The reattached fragments are susceptible to further fracture when the restored teeth undergo further trauma. The resistance of the fractured teeth that has been reattached is the subject of the majority of concerns. Preconditioning the fractured fragments with remineralizing agents may aid in hydration. Thus, study will be conducted to evaluate the resistance of the fracture of a tooth that is reattached and pre-treated with remineralizing agents such as sodium fluoride and casein phosphopeptide-amorphous calcium phosphate and further reattached using one of the self-adhesive bioactive composite.

The Entanglements of Matter, Mind, and Meaning: Novalis’s “Elastic Mode of Thinking”

This article explores the methodological, aesthetic, and ecological implications of Novalis’s dynamic conception of matter, called “original elastic fluid.” By elucidating a set of this fluid’s generative and performative capacities, Novalis explains the non-teleological and contingent emergence of natural objects and organic forms as well as mental figures and poetic genres. This article argues that Novalis’s model of a “dynamic materialism” resonates with recent new materialist discourses that emphasize the agency of inorganic matter. More specifically, Karen Barad’s “material-discursive” approach, derived from quantum phenomena that suggest the inseparability of meaning and matter, is comparable to the ways in which Novalis draws on dynamic laws of fluidity to develop an “elastic mode of thinking” and a Romantic conception of prose with a characteristically loose rhythmic structure. A reading of Die Lehrlinge zu Sais as an example of this prose form sheds new light on the entangled relationship between mind and nature and “ecopoetic” approaches to nature.

Investigation on the influence of heterogeneous synergy in contagion processes on complex networks.

Synergistic contagion in a networked system occurs in various forms in nature and human society. While the influence of network's structural heterogeneity on synergistic contagion has been well studied, the impact of individual-based heterogeneity on synergistic contagion remains unclear. In this work, we introduce individual-based heterogeneity with a power-law form into the synergistic susceptible-infected-susceptible model by assuming the synergistic strength as a function of individuals' degree and investigate this synergistic contagion process on complex networks. By employing the heterogeneous mean-field (HMF) approximation, we analytically show that the heterogeneous synergy significantly changes the critical threshold of synergistic strength σc that is required for the occurrence of discontinuous phase transitions of contagion processes. Comparing to the synergy without individual-based heterogeneity, the value of σc decreases with degree-enhanced synergy and increases with degree-suppressed synergy, which agrees well with Monte Carlo prediction. Next, we compare our heterogeneous synergistic contagion model with the simplicial contagion model [Iacopini et al., Nat. Commun. 10, 2485 (2019)], in which high-order interactions are introduced to describe complex contagion. Similarity of these two models are shown both analytically and numerically, confirming the ability of our model to statistically describe the simplest high-order interaction within HMF approximation.

Multimodal Emotion-Cause Pair Extraction in Conversations

Conversation is an important form of human communication and contains a large number of emotions. It is interesting to discover emotions and their causes in conversations. Conversation in its natural form is multimodal. Many studies have been carried out on multimodal emotion recognition in conversations, yet there is still a lack of work on multimodal emotion cause analysis. In this work, we introduce a new task named Multimodal Emotion-Cause Pair Extraction in Conversations, aiming to jointly extract emotions and the corresponding causes from conversations reflected in multiple modalities (i.e., text, audio and video). We accordingly construct a multimodal conversational emotion cause dataset, Emotion-Cause-in-Friends, which contains 9,794 multimodal emotion-cause pairs among 13,619 utterances in the <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">Friends</i> sitcom. We benchmark the task by establishing two baseline systems including a heuristic approach considering inherent patterns in the location of causes and emotions and a deep learning approach that incorporates multimodal features for emotion-cause pair extraction, and conduct the human performance test for comparison. Furthermore, we investigate the effect of multimodal information, explore the potential of incorporating commonsense knowledge, and perform the task under both Static and Real-time settings.

Memory-Aware Attentive Control for Community Question Answering With Knowledge-Based Dual Refinement

The question answering system in open domain enables a machine to automatically select and generate the answer for questions posed by humans in a natural language form on the website. Previous approaches seek effective ways of extracting the semantic features between question and answer, but the contextual information effects in semantic matching are still limited by short-term memory. As an alternative, we propose an internal knowledge-based end-to-end model, enhanced by an attentive memory network for both answer selection and answer generation tasks by considering the full advantages of the semantics and multifacts (i.e., timescales, topics, and context). In detail, we design a long-term memory to learn the top- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$k$</tex-math> </inline-formula> fine-grained similarity representations, where two memory-aware mechanisms aggregate the series of semantic word-level and sentence-level similarities to support the coarse contextual information. Furthermore, we propose a novel memory refinement mechanism with the two-dimensional of writing heads that offer an efficient approach to multiview selection of the salient word pairs. In the training stage, we adopt the transformer-based transfer learning skill to effectively pretrain the model. Experimentally, we compare the state-of-the-art approaches on four public datasets, the experimental results show that the proposed model achieves competitive performance.

O33 High fat level is required to protect and deliver the natural form of vitamin E in calves post-weaning

O33 High fat level is required to protect and deliver the natural form of vitamin E in calves post-weaning

Effective inclusion practices for neurodiverse children and adolescents in informal STEM learning: a systematic review protocol

BackgroundInformal learning experiences in science, technology, engineering, and math (STEM) can enhance STEM learning that occurs in formal educational settings and curricula as well as generate enthusiasm for considering STEM careers. The aim of this systematic review is to focus on the experiences of neurodiverse students in informal STEM learning. Neurodiversity is a subgroup of neurodevelopmental conditions, such as autism, attention deficit disorder, dyslexia, dyspraxia, and other neurological conditions. The neurodiversity movement regards these conditions as natural forms of human variation, as opposed to dysfunction, and recognizes that neurodiverse individuals possess many strengths relevant to STEM fields.MethodsThe authors will systematically search electronic databases for relevant research and evaluation articles addressing informal STEM learning for K-12 children and youth with neurodiverse conditions. Seven databases and content-relevant websites (e.g., informalscience.org) will be searched using a predetermined search strategy and retrieved articles will be screened by two members of the research team. Data synthesis will include meta-synthesis techniques, depending on the designs of the studies.DiscussionThe synthesis of the findings resulting from various research and evaluation designs, across the K-12 age span, and across various informal STEM learning contexts, will lead to depth and breadth of understanding of ways to improve informal STEM learning programs for neurodiverse children and youth. The identification of informal STEM learning program components and contexts shown to yield positive results will provide specific recommendations for improving inclusiveness, accessibility, and STEM learning for neurodiverse children and youth.Trial registrationThe current study has been registered in PROSPERO. Registration number: CRD42021278618.

Creation and research of internal combustion engines dynamic models in OpenModelica

Problem. Torsional vibrations of the internal combustion engine crankshaft are the result of uneven torque due to gas pressure in the cylinders, as well as due to inertial forces of engine moving parts. To analyze torsional vibrations, it is necessary to have an adequate mathematical model of the engine mechanical system that takes its dynamic characteristics into account. Goal. Developing methodology for determining the mass-inertial parameters of connecting rod mechanisms in the internal combustion engines and building dynamic models based on the Openmodelica environment. Developing the Modelica language algorithm for calculating natural frequencies and forms of the dynamic model oscillations. Methodology. The elastic and inertial parameters of the dynamic scheme elements are determined by their energy equivalence to the mechanical system. The construction of a dynamic and mathematical model is implemented using the Modelica programming language. Results. Based on the proposed methodology, dynamic models of straight and V internal combustion engines were built in the Openmodelica environment. Calculation of system oscillation natural frequencies and forms was carried out. The results obtained were compared with data from other sources and analyzed from the physical feasibility point of view. Originality. The proposed methodology for determining the mass-inertial parameters of the connecting rod mechanisms in the internal combustion engines and the way to build dynamic models based on them has been shown. An algorithm has been developed in Modelica language, and natural oscillation frequencies and forms were calculated. Practical value. The developed models can be used as a part of the higher-level dynamic machine models, as well as for determining the parameters of engine crankshaft torsional vibrations.