bluuebunny/crossref_metadata_2025 huggingface dataset:
THE EFFECT OF COCONUT COIR FIBER POWDER CONTENT AND HARDENER WEIGHT FRACTIONS ON MECHANICAL PROPERTIES OF AN EPR-174 EPOXY RESIN COMPOSITE
Authors: Fitri Muhamad , Mahzan Shahruddin , Hidayat Imam , Nurato Nurato
Published: October 2021

The development of composite materials is increasingly widespread, which require superior mechanical properties. From many studies, it is found that the mechanical properties of composite materials are influenced by various factors, including the reinforcement content, both in the form of fibers and particle powder. However, those studies have not investigated the effect of the hardener weight fraction on the mechanical properties of resin composite materials. Even though its function as a hardener is likely to affect its mechanical properties, it might obtain the optimum composition of the reinforcing content and hardener fraction to get the specific mechanical properties. This study examines the effect of hardener weight fraction combined with fiber powder content on mechanical properties of EPR-174 epoxy resin matrix composite and determines the optimum of Them. The research was conducted by testing a sample of composite matrix resin material reinforced with coconut fiber powder. The Powder content was made in 3 levels, i.e.: 6%, 8%, and 10%. While the hardener fraction of resin was made in 3 levels, i.e.: 0.4, 0.5, and 0.6. The test results showed that pure resin had the lowest impact strength of 1.37 kJ/m2. The specimen with a fiber powder content of 6% has the highest impact strength i.e.: 4.92 kJ/m2. The hardener fraction of 0.5 has the highest impact strength i.e.: 4.55 kJ/m2. The fiber powder content of 8% produced the highest shear strength i.e.: 1.00 MPa. Meanwhile, the hardener fraction of 0.6 has the highest shear strength i.e.: 2.03 MPa.
REDUCING OVERHEAD OF SELF-STABILIZING BYZANTINE AGREEMENT PROTOCOLS FOR BLOCKCHAIN USING HTTP/3 PROTOCOL: A PERSPECTIVE VIEW
Authors: Akbar Nur Arifin , Sunyoto Andi , Arief M. Rudyanto , Caesarendra Wahyu
Published: October 2021

Today, there is a tendency to reduce the dependence on local computation in favor of cloud computing. However, this inadvertently increases the reliance upon distributed fault-tolerant systems. In a condition that forced to work together, these systems often need to reach an agreement on some state or task, and possibly even in the presence of some misbehaving Byzantine nodes. Although non-trivial, Byzantine Agreement (BA) protocols now exist that are resilient to these types of faults. However, there is still a risk for inconsistencies in the application state in practice, even if a BA protocol is used. A single transient fault may put a node into an illegal state, creating a need for new self-stabilizing BA protocols to recover from illegal states. As self-stabilization often comes with a cost, primarily in the form of communication overhead, a potential lowering of latency - the cost of each message - could significantly impact how fast the protocol behaves overall. Thereby, there is a need for new network protocols such as QUIC, which, among other things, aims to reduce latency. In this paper, we survey current state-of-the-art agreement protocols. Based on previous work, some researchers try to implement pseudocode like QUIC protocol for Ethereum blockchain to have a secure network, resulting in slightly slower performance than the IP-based blockchain. We focus on consensus in the context of blockchain as it has prompted the development and usage of new open-source BA solutions that are related to proof of stake. We also discuss extensions to some of these protocols, speciﬁcally the possibility of achieving self-stabilization and the potential integration of the QUIC protocol, such as PoS and PBFT. Finally, further challenges faced in the ﬁeld and how they might be overcome are discussed.
Assepsia no consultório odontológico
Authors: Bercini Francesca , Padilha Dalva Maria Pereira , Azambuja Taís Weber Furlanetto de
Published: October 2021

The authors presents a literatura revision about sterilizations, desinfection and antisepsis methods in dentist's office. In this work emphasize the advantages and disadvantatens by every way of asepsis used in dentistry practice.
Choroid Plexus Carcinoma with Rhabdoid Features: A Case Report
Authors: Mateo-Camacho Yohana , Figueroa-Ortiz Ramón , Orozco-Vázquez Julita , Moreno-Blanco Angélica , Plácido-Mendez Aureliano
Published: October 2021

The case of a patient under 2 years of age with acute vomiting, fever
and seizures. MR imaging of the brain revealed a right lateral
intraventricular mass and mild hydrocephalus. Surgery achieved gross
total tumor resection, but tumor histology revealed choroid plexus
carcinoma with heavy stratification and atypical “rhabdoid” cells.
Results of mitral valve surgery for secondary regurgitation with poor left ventricular function
Authors: Kitamura Hideki , Kagase Ai , Tamaki Mototsugu , Kawaguchi Yasuhiko , Aichi Chiaki
Published: October 2021

Background and aim: Surgical repair of secondary mitral regurgitation is
still controversial especially when the cardiac function is reduced. The
purpose of this study was to retrospectively investigate the operative
and long-term results of mitral valve surgery for secondary mitral valve
regurgitation with poor cardiac function. Risk factors for long-term
mortality were also investigated. Methods Patients with preoperative
echocardiographic left ventricular ejection fraction ≤30% who underwent
mitral valve surgery due to secondary mitral regurgitation comprised the
study group. Cardiac function and valve regurgitation was assessed with
echocardiogram using modifiled Simpson’s method and color-flow Doppler.
Peri-operative results and long-term survival were investigated. Results
Sixty-nine patients (mean age 65.5 years, 58 males) with secondary
mitral regurgitation and poor left ventricular function comprised the
study group, and their early results were investigated; long-term
results were evaluated in 66 cases. There were no operative/in-hospital
deaths. Postoperative echocardiograms showed significantly improved
mitral regurgitation, from moderate to severe to less than trivial
(p<0.001), although poor left ventricular function remained.
Actual 1-, 3-, and 5-year survival rates were 90.5%, 76.5%, and
63.4%, respectively. The 1-, 3-, and 5-year re-admission-free rates due
to heart failure were 74.6%, 61.6%, and 55.3%, respectively. Patients
with clinical frailty scale scores ≥4 had a worse prognosis than
patients with clinical frailty scale scores <4 (log-rank
p=0.046). Conclusions Open mitral valve surgery could be appropriate for
secondary mitral valve regurgitation with poor cardiac function,
however, operative indications should be considered carefully in
patients with high clinical frailty scale scores.
Existence of Solutions for a Class of Nonlinear Neumann BVPs in the Presence of Upper and Lower Solutions
Authors: Urus Nazia , Verma Amit
Published: October 2021

In this article, we explore the monotone iterative technique
(MI-technique) to study the existence of solutions for a class of
nonlinear Neumann 4-point, boundary value problems (BVPs) defined as,
\begin{eqnarray*} \begin{split}
-\z^{(2)}(\y)=\x(\y,\z,\z^{(1)}),\quad
0<\y<1,\\
\z^{(1)}(0)=\lambda
\z^{(1)}(\beta_1
),\quad
\z^{(1)}(1)=\delta
\z^{(1)}(\beta_2),
\end{split} \end{eqnarray*} where $
0<\beta_1 \leq
\beta_2 <1$ and $\lambda$,
$\delta\in (0,1)$. The nonlinear term $
\x(\y,\z,\z^{(1)}):
\Omega\rightarrow
\mathbb{R} $, where $\Omega
=[0,1]\times \mathbb{R}^2 $, is
Lipschitz in $ \z^{(1)}(\y)$ and
one sided Lipschitz in $ \z(\y)$. Using
lower solution $l(\y)$ and upper solutions
$u(\y)$, we develop MI-technique, which is based on
quasilinearization. To construct the sequences of upper and lower
solutions which are monotone, we prove maximum principle as well as anti
maximum principle. Then under certain assumptions, we prove that these
sequence converges uniformly to the solution $
\z(\y)$ in the specific region, where $
\frac{\partial\x}{\partial\z}<0
$ or $
\frac{\partial\x}{\partial\z}>0
$. To demonstrate that the proposed technique is effective, we compute
the solution of the nonlinear multi-point BVPs. We don’t require sign
restriction which is very common and very strict condition.
Bronchogenic cyst of the posterior neck mimicking lymphatic malformation
Authors: Yee Addison , Navuluri Sriram , Sun Ravi , Lindsey Miki , Gonzalez-krellwitz Laura , Strub Graham
Published: October 2021

Bronchogenic Cysts are embryologic malformations of the foregut and are
rarely found head and neck region. Here we present a case of an upper
scapular/lower posterior neck cystic mass which was initially suspicious
for lymphatic malformation but confirmed by pathology to be a ectopic
bronchogenic cyst.
Genotypic variation rather than ploidy level shapes trait expression in a foundation tree species under drought stress and defoliation
Authors: Eisenring Michael , Lindroth Richard , Giezendanner Noreen , Mock Karen , Kruger Eric
Published: October 2021

With advancing climate change, tree survival increasingly depends on
mechanisms that facilitate coping with multiple environmental stressors.
At the population level, genetic diversity is a key determinant of a
tree species’ capacity to deal with stress. However, little is known
about the relative relevance of the different components of genetic
diversity for shaping tree stress responses. We compared how two
components of genetic diversity, genotypic variation and ploidy level,
shape growth, phytochemical, and physiological traits of Populus
tremuloides, under environmental stress. In two field experiments we
exposed eight diploid and eight triploid aspen genotypes to individual
and interactive drought stress and defoliation treatments. We found
that: 1) Genotypic differences were critical for explaining variation of
most of functional traits and their responses to stress. 2) Ploidy
levels generally played a subordinate role for shaping traits, as they
were typically obscured by genotypic differences. 3) As an exception to
the second finding, we found that triploid trees expressed higher levels
of foliar defenses, photosynthesis, and rubisco activity under
well-watered conditions, and displayed greater drought resilience than
diploids. This research demonstrates that the simultaneous study of
multiple sources of genetic diversity is important for understanding how
trees will respond to environmental change.
Bulk deposition of base cations in a subalpine natural forest landscape estimated by canopy budget model: A focus on the forest edge canopy
Authors: Tan Siyi , Qing Dong , Ni Xiangyin , Yue kai , Liao Shu , Wu fuzhong
Published: October 2021

Calculations of base cation inputs of loads in forest edge canopies are
rare, although forest edge canopies play a paradoxical role in the
effective capture of atmospheric deposition. Throughfall deposition and
canopy exchange of base cations were studied with a continuous
throughfall investigation under a natural forest edge and a closed
canopy in a subalpine forest over a period of 2 years. Compared with
precipitation, the concentration of base cations in the throughfall of
both canopies was enriched as expected, but the enrichment level in the
forest edge was less than that in the closed canopy. Moreover, the
throughfall deposition of base cation fluxes in the closed canopy (35.19
kg ha-1 y-1) was slightly higher than that in the forest edge canopy
(33.50 kg ha-1 y-1). Seasonally, the base cation input in the rainy
season was 2.32–2.70 times higher than that in the snowy season in
throughfall in forest edge canopy and the closed canopy. Furthermore,
the canopy budget model suggested that the direction and magnitude of
canopy exchange and dry deposition controlled the net throughfall fluxes
(NTF) of base cations, and obvious differences could be observed between
the canopy and seasonal scales. Compared with other elements, K and Mg
leached from the main canopy exchange process, while Ca was absorbed by
both canopy types in the annual NTF. These results highlight the spatial
variability of base cation chemical characteristics, enhance cognitive
the deposition of nutrients and regulatory factors in different forest
landscapes, preferably guide the formulation forest ecological
management strategies.
Is There Utility in Using Mastoid Pressure Dressing in Children Undergoing a Mastoidectomy?
Authors: Shinnawi Shadi , Gordin Arie , Zaroura Iyad , Rafoul Bahaa , Khoury Majd , Cohen-Vaizer Mauricio
Published: October 2021

Objectives: To assess the efficacy of avoiding mastoid pressure dressing
(MPD) on children as a means of preventing discomfort and postoperative
pain. Design: A retrospective controlled study. Setting: All operations
were carried out by experienced surgeons using standard techniques,
whose custom, not the gravity of any individual case, dictated the use
of MPD. Participants: children who underwent mastoidectomy for
inflammatory middle ear diseases at a tertiary centre from 2010-2020.
Main outcome measures: Wound-related complications and visual analog
scale (VAS) pain scores at discharge were compared between children who
had a MPD applied following surgery and those who did not. Results: 119
cases were included. The demographic characteristics of the patients and
surgical techniques employed similar for both groups. There were 91
patients in the MPD group and 28 in the non-mastoid dressing (NMPD)
group. In the MPD group, 5 patients developed minor wound dehiscence, 8
experienced surgical site infections (SSI), and one patient developed a
keloid. In the NMPD group, one patient had a SSI, while another had a
local hematoma. Therefore, there were no differences between the groups
in relation to postoperative complications (p = 0.47). Despite these
similitudes, the NMPD patients suffered less postoperative pain, as
measured by the VAS (p =.02). Conclusions: This study shows that no
significant benefit is derived from using a MPD after mastoidectomy in
children. Surgeons should adhere to principles of appropriate
haemostasis and wound closure to prevent postoperative wound
complications. Our study supports the abandonment of routine MPD on
children following mastoidectomy.
Establishing a video Multidisciplinary Team meeting between Cameroon, Central Africa, and Leeds, UK, childhood cancer services
Authors: Njodzeka Bernard Wirndzem , Afungchwi Glenn , Kouya Francine , Picton Susan , Squire Roly , Jator Brian , Njamshi Vera , Bardin Richard , Hesseling Peter , Hollis Rachel , Feudjio Ghislain , Morgan Jessica
Published: October 2021

Abstract Background and aims Multidisciplinary team (MDT) meetings
provide a regular, structured meeting of a core group of professionals
to provide expert decision-making in individual patient care. We
describe our experiences in establishing a virtual pediatric oncology
MDT between twinning partners in Cameroon (4 hospitals) and the UK.
Methods Monthly video conferencing MDT meetings were established in
March 2019, initially using Google meet then using Zoom platforms. Case
details were circulated using formal proformas. Standard operating
procedures were outlined for the MDT conduct. Results There have been
269 discussions of 201 patients in 21 meetings. Patients have been
varied in age (up to 24 years). Eighty-seven (43.3%) patients had NHL,
16 (8.0%) had Wilms tumour, 20 (10.0%) had Acute Lymphoblastic
Leukaemia, 19 (9.5%) had Retinoblastoma and 59 (29.4%) had other
malignancies. Four of the patients did not have a malignancy. The
majority of patients had stage 3 (51, 45.1%) or stage 4 (59, 52.2%).
Nine patients had relapsed disease. Core team members reported positive
benefits from the MDT, including defining goals of care, shared decision
making, professional education and team-building. Conclusions Virtual
MDT meetings between geographically dispersed teams are possible and
have proved particularly valuable during the COVID-19 pandemic when
in-person visits are not permitted. Cancer treatment cannot be done in
isolation; the regular MDT meetings have paved the way for informed care
through regular consultancy.
Survey of the Use of Traditional and Complementary Medicine (T&CM) Among Children with Cancer at three hospitals in Cameroon.
Authors: Afungchwi Glenn , Kruger Mariana , Hesseling Peter , Elsland Sabine van , Ladas Elena , Marjerrison Stacey
Published: October 2021

Introduction There is lack of diagnostic and treatment resources with
variable access to childhood cancer treatment in low- and middle-income
countries (LMIC), which may lead to subsequent poor survival. The
primary aim of this study is to determine the prevalence and types of
T&CM used in Cameroon. Secondarily, we explored determinants of T&CM
use, associated costs, perceived benefits and harm, and disclosure of
T&CM use to medical team. Method A prospective, cross-sectional survey
amongst parents and carers of children younger than 15 years of age who
had a cancer diagnosis and received cancer treatment at three Baptist
Mission hospitals between November 2017 and February 2019. Results
Eighty participants completed the survey. Median patient age was 8.1
years (IQR4.1 – 11.1). There was significant availability (90%) and
use (67.5%) of T&CM, while 24% thought T&CM would be good for cancer
treatment. Common T&CM remedies included herbs and other plant remedies
or teas taken by mouth, prayer for healing purposes and skin cutting.
Living more than 5 hours away from the treatment center (p=0.030),
anticipated costs (0.028), and a habit of consulting a traditional
healer when sick (p=0.006) were associated with the use of T&CM. T&CM
was mostly paid for in cash (36.3%) or provided free of charge (20%).
Of importance was the fact that nearly half (44%) did not want to
disclose the use of TM to their doctor. Conclusion Pediatric oncology
patients used T&CM before and during treatment but would be unlikely to
disclose to the child’s health care team.
Exergy analysis in diesel engine with binary blends
Authors: Gnanamani Senthilkumar , Gaikwad Pradeep , Subramaniam Lakshmisankar , Chandralingam Rameshkumar
Published: October 2021

Investigation on Diesel engine with minimized fuel consumption rate and increased output power is not the meaningful procedure if irreversibility in the thermodynamic system is ignored. This current procedure is aimed to signify the importance of exergy analysis in Diesel engine performance on the perspective of Second law of thermodynamics analysis. In this study, diesel-cotton seed oil blends were tested on engine running with direct fuel injection mode of operation. The experiments were conducted with diesel (D), 5% cotton seed oil-95% diesel (CB5), 10% cotton seed oil-90% diesel (CB10), and 15% cotton seed oil-85% diesel (CB15) for estimation of brake power, energy rate, and exergy rate in the fuel and exhaust, heat release rate, exergy destruction, ideal efficiency (I law), and actual (II law) efficiency. The results outcome that an increase in trend was observed in the fuel exergy and thermal exergy loss with engine speed for D, CB5, CB10, and CB15. The loss of exergy, heat release rate, percentage of exergy and exergy transferred through exhaust gases decreased for CB5, CB10, and CB15 compared to diesel.
A numerical study on the thermal storage properties of packer bed under different arrangements of phase change material capsules
Authors: Zhang Zhong-Bin , Cong Yu , Ci Zhong-Qiu , Cao Li-Hua
Published: October 2021

To evaluate the thermal storage properties of packer bed under different arrangements o phase change material capsules, three packing models (strip packing model, in-line packing model and disordered packing model) are developed. The index of thermal storage properties for packer bed such as exergy efficiency, energy efficiency, pressure drop, charging time, temperature uniformity, and thermal storage capacity is studied. The results show that the uniformity of the temperature field of the orderly packing model is obviously better than that of the disorderly ones. In addition, the in-line packing model has obvious advantages on the energy efficiency and the thermal storage capacity compared with the strip packing model. The strip packing model has the highest exergy efficiency, but it has a high pressure drop.
Impact of ventilation system type on indoor thermal environment and human thermal comfort in a ceiling cooling room
Authors: Wu Xiaozhou , Liu Genglin , Gao Jie , Wu Shuang
Published: October 2021

A ceiling cooling (CC) system integrated with a mechanical ventilation system is an advanced HVAC system for the modern office building with glass curtain wall. In this paper, considering the influence of heat transfer of external envelope, the indoor thermal environment and human thermal comfort were objectively measured and subjectively evaluated in a CC room with mixing ventilation (MV) or underfloor air distribution (UFAD). Indoor physical parameters and human skin temperatures were measured as the chilled ceiling surface temperature and supply air temperature were 17.1-17.6? and 22.2-22.6?. Simultaneously, 16 subjects (8 males and 8 females) were selected to subjectively evaluate the thermal environment. The results showed that the difference between mean radiant temperature and air temperature in the occupied zone was 0.8? with CC + MV and 1.2? with CC +UFAD, and the indoor air velocity was 0.17 m/s with CC + MV and 0.13 m/s with CC + UFAD. In addition, the calculated and measured thermal sensation votes with CC + MV were all slightly less than those with CC + UFAD. Therefore, ventilation system type had a slight impact on the indoor thermal envi?ronment and human thermal comfort in the CC room.
The misfire degree and its effects on combustion and pollutant formation of subsequent cycles: A study on a high speed gasoline engine
Authors: Chen Yangyang , Jian Qifei , Deng Banglin , Hou Kaihong
Published: October 2021

Misfire has attracted lots of researcher?s attention as a common engine fault, but most researchers focus on misfire diagnosis. For motorcycle engines, misfire is more worth to investigate because of the more extensive operation windows. The misfire degree is detected by experiment and its effect mechanism on subsequent cycles is investigated through simulation. Its effect is analyzed through two aspects. First, misfire cycle leaves about 10.8% fuels that participate in next cycle working process, leading to richer fuel/air mixture. But 13.8% lower of in-cylinder peak pressure than normal scenario is observed. Then interaction between flame propagation and flow field is discussed. The effect of misfire on flow field intensity is small, but it changes flow field structure largely. This change evolves persistently during subsequent processes, superimposing the lower temperature brought by misfire of last cycle, resulting in slower flame propagation and thus lower thermal efficiency for misfire scenario. This impact can last 3-4 subsequent cycles until gradually fades away. Second, for pollutants formations, the NO emission is lower for misfire scenario due to the lower in-cylinder temperature, but HC emission is higher. Although higher CO is produced during main combustion phase for misfire scenario, it converts to CO2 more largely during post flame stage, resulting in almost the same final amount relative to normal scenario.
Evaluation of an automated superimposition method based on multiple landmarks for growing patients
Authors: Kim Min-Gyu , Moon Jun-Ho , Hwang Hye-Won , Cho Sung Joo , Donatelli Richard E. , Lee Shin-Jae
Published: October 2021

Objectives

To determine if an automated superimposition method using six landmarks (Sella, Nasion, Porion, Orbitale, Basion, and Pterygoid) would be more suitable than the traditional Sella-Nasion (SN) method to evaluate growth changes.

Materials and Methods

Serial lateral cephalograms at an average interval of 2.7 years were taken on 268 growing children who had not undergone orthodontic treatment. The T1 and T2 lateral images were manually traced. Three different superimposition methods: Björk's structural method, conventional SN, and the multiple landmark (ML) superimposition methods were applied. Bjork's structural method was used as the gold standard. Comparisons among the superimposition methods were carried out by measuring the linear distances between Anterior Nasal Spine, point A, point B, and Pogonion using each superimposition method. Multiple linear regression analysis was performed to identify factors that could affect the accuracy of the superimpositions.

Results

The ML superimposition method demonstrated smaller differences from Björk's method than the conventional SN method did. Greater differences among the cephalometric landmarks tested resulted when: the designated point was farther from the cranial base, the T1 age was older, and the more time elapsed between T1 and T2.

Conclusions

From the results of this study in growing patients, the ML superimposition method seems to be more similar to Björk's structural method than the SN superimposition method. A major advantage of the ML method is likely to be that it can be applied automatically and may be just as reliable as manual superimposition methods.
Local hemostatic drug application for prophylaxis of pacemaker pocket hematoma
Authors:   Ryazan State Medical University, Kalinin R.E. , Suchkov I.A. ,   Ryazan State Medical University, Povarov V.O. ,   Ryazan State Medical University, Plotkin A.V. ,   Moscow Regional Research and Clinical Institute of Blood
Published: October 2021

BACKGROUND: Prevention of pacemaker pocket hematoma is an urgent problem of modern cardiovascular surgery. A method of prevention of hematomas may be application of local hemostatic agents. One of such means is incomplete silver salt of polyacrylic acid, registered in the Russian Federation as a medical product under the trade name “Hemoblock”. AIM: To evaluate the efficacy and safety of partial silver salt of polyacrylic acid (Hemoblock®) as a hemostatic drug for prophylaxis of pacemaker (PM) pocket hematoma. MATERIALS AND METHODS: The study included 29 patients (18 men) with average age of 72.8 ± 9.8 years and indications for PM implantation. The patients were divided into 2 groups, partial silver salt of polyacrylic acid was used during the PM implantation in group A, 0.9% NaCl solution was used in group B. Anticoagulant therapy was not cancelled. In the postoperative period, patients underwent a daily examination by a surgeon, on the 3th–5th day — an ultrasound of soft tissues in the area of the PM pocket to diagnose hemorrhagic complications. After 1 month, a control examination of the postoperative wound and an assessment of the PM function were performed. RESULTS: In 1 (6.3%) patient in group B, a PM pocket hematoma was found which required drainage in the dressing room and increased the period of hospitalization after surgery to 7 days. Soft tissue imbibition with blood was observed in 9 (56.3%) group B patients. No PM pocket hematomas and imbibition of soft tissues were observed in group A. PM implantation with uninterrupted anticoagulant therapy without the use of hemostatic agents increases the risk of soft tissue imbibition with blood by 2.3 times (p = 0.001, r = 0.605, RR 2.3, 95% CI 1.3–4). Age, gender, body mass index, body surface area, left ventricular ejection fraction, type of anticoagulation therapy, indication for PM implantation, type of PM, and the peculiarities of the operation did not influence the risk of development of PM pocket hematoma or soft tissue imbibition with blood (p > 0.05). CONCLUSION: The use of a partial silver salt of polyacrylic acid (Hemoblock®) can reduce the risk of development of hematomas and soft tissue imbibition with blood in the area of the pacemaker pocket and does not lead to the development of infectious complications and allergic reactions.
Topographic-anatomical characteristics of artery tibialis posterior and its branches in the area of ankle canal
Authors:   Ryazan State Medical University, Kalinin R.E. , Suchkov I.A. ,   Ryazan State Medical University, Klimentova E.A. ,   Ryazan State Medical University, Shanaev I.N. ,   Ryazan State Medical University, Yudin V.A. ,   Ryazan State Medical University
Published: October 2021

AIM: To clarify peculiarities of the anatomy and topography of the plantar vessels in the area of the ankle canal, to justify access to the bifurcation of the artery tibialis posterior and ultrasound examination of the plantar arteries. The results of anatomical preparations of 10 amputated lower limbs, and of ultrasound duplex angioscanning (DUS) of 30 healthy volunteers without pathology of the vascular system performed using a linear transducer with frequency of 7–12 MHz, were studied. According to the data of anatomical preparation and ultrasound examination, the bifurcation level of the artery tibialis posterior was 1.7 ± 0.4 cm (min 0.5 cm — max 2 cm) below the level of the posterior edge of the medial ankle and was slightly covered by the musculus abductor hallucis. The average diameter of the artery tibialis posterior above the bifurcation level was 2.56 ± 0.4 mm, of the medial plantar artery 1.4±0.44 mm, and of the lateral plantar artery 1.8 ± 0.5 mm. The lateral plantar artery was 90% larger in diameter than the medial plantar artery. In 7% of cases, the medial plantar artery was larger, and in 3% of cases, the diameters of both arteries were equal. When taking the bifurcation of the posterior tibial artery as the central point, the plantar vessels on the DUS can be traced distally down under the abdomen of the musculus abductor hallucis: the medial vessels lie more anteriorly at 2 o’clock position, and the lateral vessels lie somewhat posteriorly at 1 o’clock. Assessment of blood flow at this level gives an idea of the state of the foot vessels. The level of bifurcation of the artery tibialis posterior is located 1.7 ± 0.4 cm below the posterior edge of the medial malleolus, which makes it possible to identify the location of access to it. The location of the DUS probe from this point at 2 o'clock position corresponds to the projection of the medial plantar artery, at 1 o'clock — to the lateral plantar artery on the right lower limb, on the left lower limb — at 10 and 11 o'clock, respectively.
THE MYCOBIOTA OF SAMANLI MOUNTAINS IN TURKEY
Authors: DOGAN Hasan , ÖZTÜRK Öyküm , ŞANDA Murad Aydın Şanda
Published: October 2021

The Mycobiota of Samanlı Mountains were investigated in this study. Specimens were collected during 3 years between November 2012 and November 2015. 510 macrofungal taxa belonging to 197 genera within 84 families were recorded with field and laboratory studies. Of these, 37 genera and 57 taxa belong to Ascomycota, while 160 genera and 453 taxa belong to Basidiomycota. Nine species were found for the first time in Turkey from Basidiomycota. These taxa are Amanita subnudipes (Romagn.) Tulloss, Hebeloma quercetorum Quadr., Hygrocybe obrussea (Fr.) Wunsche, Lactarius mediterraneensis Llistosella & Bellù, Lactifluus glaucescens (Crossl.) Verbeken, Russula lilacea Quél., R. rubra (Lam.) Fr., Stereopsis reidii Losi & A. Gennari and Tricholoma roseoacerbum A. Riva. The Stereopsidaceae family and the genus Stereopsis D.A. Reid was found for the first time in Turkey.The richest families in terms of the number of taxa are Russulacea with 58 taxa (11.3%), Agaricaceae with 46 taxa (8.9%), Tricholomataceae with 43 taxa (8.4%), Boletaceae with 32 taxa (6.2%), Polyporaceae with 23 taxa (4.5%) and the most crowded genera are Russula Pers. with 41 taxa (8%), Tricholoma (Fr.) Staude with 26 taxa (5%), Amanita Dill. ex Boehm. with 19 taxa (3.7%), Lactarius Pers. with 16 taxa (3.1%) and Inocybe (Fr.) Fr. with 14 taxa (2.7%). The ecological status of the species is as follows; 245 (48%) are saprobe, 226 (45%) are mycorrhizal, 20 (3.7%) are lignicolous, 18 (2.9%) are parasite, and one is entomopathogenic. Habitat distribution in the research area is as follows: 300 species in Abies nordmanniana (Stev.) Spach. subsp. bornmuelleriana (Mattf.) Coode & Cullen forest, 295 species in Fagus orientalis Lipsky forest, 125 species in Quercus spp. forest, 88 species in Pinus nigra J.F.Arnold forest, 56 species in Castanea sativa Mill. forest, 53 species in Pinus sylvestris L. forest, 49 species in Carpinus orientalis Mill. forest and 24 species in Pinus maritima Lam. forest.
Doença periodontal e risco de complicações da Covid-19
Authors: Fares Hussein Nasser , Nagem Filho Halim , Fares Nasser Hussein , Fritsch Giordana Gregório , da Silva Rafael Julivan Gomes
Published: October 2021

The Covid-19 complexity is caused by severe inflammation and some signs are common with periodontitis. The attributes of periodontitis are pathophysiological in response to cytokines, which are chemotactic and recruit inflammatory cells. This article aims to investigate a probable link between periodontal disease that increases severity of Covid-19 and to consider the risk factors that influence the outcome of Covid-19 infections and the importance of periodontal health in prevention. Dental surgeons are high-risk professionals, especially periodontists, due to the frequent use of ultrasound and other aerosol-generating surgical instruments. In fact, in addition to the nasal passages, the mouth is a privileged place of contamination. Urgent or emergent dental care is often invasive and requires aerosolization. It is plausible that periodontitis aggravates an inflammatory process resulting from the infection, problems often linked to the most serious cases of Covid-19.
Dental implants in aesthetic zone – cases report
Authors: Martínez Adel , Sánchez Ángel Yamith , Del-Valle Samuel Urbano
Published: October 2021

Placement of dental implants in the aesthetic zone needs to be planned to consider both atraumatic tooth extraction and the preservation of the socket. The authors presented two clinical cases of patients with indication of dental extraction of the upper central incisor which was planned to use a two-armed lever as atraumatic alveolar preservation technique and managed in two different ways. Case one referred to a traditional approach that included dental extraction, guided bone regeneration, and provisionalization, with a period of healing of 6 months to enable the bone regeneration. Subsequently, it was placed a dental implant TSV 3.7*13 mm (Zimmer Dental). Five months after of clinical and radiographic controls, the second phase was started with the rehabilitation. The second case was about a patient who required dental extractions of maxillary left central incisor due to a fracture of the crown with a poor prognosis, in which the dental extraction was planned to use a two-armed lever. After reclassifying the fresh socket, a dental implant TSV of 3.7 x 13 mm (Zimmer Dental) was placed with modified drilling technique, implant placement resulted in primary fixation with insertion torque level lower than 30 Ncm so the immediate load was not performed. Both patients received a ceramic crown with functional and esthetic results after 16 months of continuous checks and controls. It was concluded that the alveolar preservation in the aesthetic zone is a strategy that starts from the extraction technique. The authors recommend the two-armed lever as atraumatic alveolar preservation technique and different ways to place dental implants.
Taurodontismo – Série de casos em pacientes jovens não sindrômicos e sindrômicos associado à hipodontia
Authors: Rédua Renato Barcellos , Viana Giuliane Ribeiro , Sechim Maryana Heinze
Published: October 2021

Several human dentition developmental anomalies are reported in the literature. The etiology of these occurrences is related to genetic, environmental or sometimes idiopathic factors. Taurodontism is defined as apical displacement of the pulp floor and consequent enlargement of the pulp chamber in multiradicular teeth. It is a result of the failure to invaginate Hertwigs epithelial sheath horizontally and commonly expresses bilaterally. This morphological pattern of molars is observed in ruminant animals and was also found in ancient Neanderthals. Association of this condition to syndromes is not exclusive, it may be associated with genetic disorders such as Down Syndrome, Klinefelter Syndrome, among others. The diagnosis is exclusively radiographic, with no alterations in the dental element crown. Among the consequences is the complexity of endodontic treatment, greater fragility of taurodontic teeth submitted to endodontics and lower orthodontic anchorage of these elements. In this paper, three case reports of patients with taurodontism are described, two of them associated with hypodontia and one in a Down Syndrome patient. This paper also includes a literature review and discussion with the main clinical implications of this occurrence.
Protetor facial confeccionado por meio do fluxo digital
Authors: Gonçalves Victor Paes Dias , Freire Bernardo Barbosa , Chilvarquer Israel , Estrella Gabriel Sardinha , Barcellos Patricia Siqueira da Silva , Azevedo Marcus Menezes Alves
Published: October 2021

The interdisciplinary performance between the specialties of Sports Dentistry with Radiology aided by technology makes possible to perfect and optimize the manufacture of facial protectors. This case report aims to show a case of making a face shield for an athlete after fracturing the nasal pyramid with the aid of digital flow. It was concluded that the facial protector was an effective device to protect the athlete’s face who has recently suffered an orofacial injury. The protector prevents the bone from undergoing refracture or displacement and allows the athlete not to be temporarily stay away of sports practing.
دور العلاقات العامة في إدارة التسويق
Authors: Kakashekh Hardawan M. , Ali Hoshyar M.
Published: October 2021

حظي موضوع العلاقات العامة أهتمام الباحثون وعلماء الادارة والتسویق وذلك لمواكبة التطورات المتسارعة في اطار الاعمال والذي یعد من السمات الممیزة للادارات في الالفیة الجدیدة لتحقیق اهدافها التسویقیة. تتبلور مشكلة  البحث في  افتقار معرفة  ادارة  الشركات بدور العلاقات  العامة  في التواصل الجماهیري ورسم الصورة الایجابیة للشركة وتحقیق الاهداف التسویقیة الناجحة .ويهدف البحث الى إثارة انتباه إدارة الشركات على الكیفیة التي یمكن من خلالها التفعیل الاتصال الجماهیري لتحقیق عملية التسویق الناجحة، وسعى  الباحثون الى تضمین  البحث  الحالي  ضمن اطار نظري وكذلك التحلیل الوصفي. وتوصل الباحثون الى مجموعة من التوصیات ابرزها توسیع وتعمیق الاعتماد على العلاقات العامة من قبل ادارة الشركة مما یسهم بشكل فاعل في حصول الشركة على اهدافها التسویقیة، وكذلك ان تاثير العلاقات العامة في إدارة التسويق هو تاثير مباشر لان إدارة التسويق هي نمط متاثر بإدارة منظومة العلاقات العامة.
اعتماد الشباب الجامعي على الاخبار في الصحف الالكترونية الكوردية ‏
Authors: Ramazan Omar A.
Published: October 2021

تهدف هذه الدراسة الى التعرف على مدى اعتماد الشباب الجامعي على الاخبار المنشورة و الاثار المتحققة جراء هذا الاعتماد، ولتحقيق ذلك اعتمدت الدراسة الحالية على المنهج المسحي عبر الاستبانة فضلا عن استخدام الوسائل الاحصائية واختبار العلاقات الارتباطية.يتكون مجتمع الدراسة من الشباب الجامعي (جامعة السليمانية – كلية اللغات)، وتم اعتماد على عينة من اجمالي المبحوثين من الطلاب، حيث بلغ عدد الطلبة(1310) طالبا وطالبة، وتم اختيار عينة الدراسة بأسلوب المعاينة العشوائية التي تتيح الفرصة لتقسيم المجتمع طبقياً، وحسب النسب، واختيرت نسبة (10%) من مجتمع الدراسة لتكون عينة له، وتمثلت بـ(131) طالبا و طالبة. و توزعوا حسب نسبة الطلاب في القسم الى العدد الكلي لطلاب الكلية، توزيع العينة بين الاقسام بالاسلوب التناسبي.وتلخصت ابرز الاستنتاجات التى توصلت لها الدراسة فيما يلي: السبب الاول لدى طلبة جامعة السليمانية – كلية اللغات في عدم اعتمادهم على الصحف الالكترونية الكوردية هو عدم شعورهم بـ(الموضوعية)، ولهذا فان هذه الفئة من الطلبة لا تزال تعتمد على الصحف الورقية و وسائل الاعلام التقليدية بشكل اساسي.اثبتت الدراسة صحة فرض البديل، بأن هناك علاقة ارتباطية ذات دلالة احصائية بين المتغيرات الديموغرافية لشباب الجامعي و بين اعتمادهم على الاخبار المنشورة في الصحف الالكترونية الكوردية. اثبتت الدراسة صحة فرض البديل بأن هناك علاقة ارتباطية طردية دالة معنويا بين اعتماد الشباب الجامعي على الاخبار المنشورة لإزدياد طموحهم المعرفي حول الاحداث، ودوافعهم النفعية جراء هذا الاعتماد. وخلصت الدراسة لمجموعة من التوصيات والمقترحات، من اهمها: ضرورة تمتع الصحف الالكترونية الكوردية بمساحة أكبر من الموضوعية في تناول القضايا و الأحداث، والابتعاد عن مدح السلطة والمسؤولين. مراعاة اسباب عدم اعتماد المبحوثين على الاخبار المنشورة في الصحف الالكترونية الكوردية، و المضي قدما في نشر الاخبار التي تتمتع بمصداقية اكبر. دعوة ادارات الصحف الالكترونية الكوردية للاستفادة من نتائج هذه الدراسة.
New Military Doctrine of the Russian Federation: To Methodological Inaccuracies of Concepts
Authors:   Moscow Technical University of Relations and Informatics (MTUCI), Ryzhov O.А.
Published: October 2021

The content of the Military Doctrine of the Russian Federation and the Law of the Russian Federation «On Countering Terrorism» is considered, the essential definitions of the main concepts are analyzed, which, according to the author, lead to methodological inaccuracies and misunderstandings of the official state document. The author’s definitions of military dangers and threats to modern Russia, as well as threats to its military security are given.
Corporate tax culture and changes in the tax loyalty of the population: the pandemic effect
Authors:   National Research University of Electronic Technology (MIET), Nazarov S.A.
Published: October 2021

The problems of evasive tax behavior of large corporations are considered. It is shown that tax optimization, being a legal strategy, does not correspond to society’s ideas about honest tax behavior, since it is one of the factors of the growth of economic and social inequality. It is noted that during the Covid-19 coronavirus pandemic, this inequality deepened, causing a decrease in the loyalty of the population to the state’s distribution policy. The payment by economic entities of a «fair» (provided for by law) amount of tax by the public is considered as their action for the benefit of society, a manifestation of the moral position and social responsibility on the part of the company’s management. The directions for the formation of the corporate tax culture are proposed.
Being and self-development of a personality in social and cultural space
Authors:   Donetsk National University, Donetsk, Andriyenko E.V. , Gorbacheva I.M. ,   National Research University of Electronic Technology, Moscow
Published: October 2021

The article is devoted to the philosophical study of personal life as a process of constant formation, development and improvement of the personality during which its qualities, properties and functions related to the physical, social and spiritual aspects have been formed. The emphasis has been made on the differences in the interpretation of the characteristics of personal life and its dynamics in various socially-cultural and historical contexts — from antiquity to the present. Such aspects of personality formation in the space of society and culture as personal self-awareness, freedom and creativity have been analyzed. It has been concluded that personality is a sociocultural construct the development of which is determined by both biological and sociocultural factors.
ANALISIS POLA DAN KEDUDUKAN ISIM FĀIL DALAM SURAH ĀLI ‘IMRĀN
Authors: Jabir Muhammad , Wahyu Pratama Putra
Published: October 2021

Isim fail merupakan salah satu isim musytaq yang paling sering disebutkan dalam Al-Qur’an. Perubahan pola atau wazan nya juga sangat bervariasi, mulai dari “فاعل” sampai “مُسْتَفْعِلٌ”. Tidak hanya polanya yang bervariasi, kedudukan isim fail yang terdapat dalam Al-Qur’an juga sangat beragam, mulai dari fail sampai mudhaf ilaih. Salah satu surah dalam Al-Qur’an yang paling banya isim fail di dalamnya yaitu surah Ali Imran.

Hasil penelitian menunjukkan bahwa terdapat 7 pola isim fail dari 19 pola isim fāil yaitu yaitu “فَاعِلٌ”, “مُفْعِلٌ”, “مُفَعِّلٌ”, “مُتَفَاعِلٌ”, “مُفْتَعِلٌ”, “مُتَفَعِّلٌ” dan “مُسْتَفْعِلٌ”. Adapun kedudukan isim fail dalam surah Ali Imran berjumlah 11 kedudukan dari 15 kedudukan yang ada yaitu isim kaana, khabar kaana, isim inna, maf’ul bih, haal, fail, na’at, khabar, athaf, majrur bi harfi jar dan mudhaf ilaih.
الجملة الاسمية في سورة النور من القرآن الكريم و معانيها
Authors: MUHAMMAD NUR HIDAYAT  , AHMAD SEHRI BIN PUNAWAN
Published: October 2021

The research aims to analyse jumlah ismiyah or mubtada’ khabar in surah An Nur. The research focuses at which ayah was contained jumlah ismiyah or mubtada khabar, and how was I’rab, meanings, and tafsir of ayat at surah An Nur. The research is literature review. The result shows there was 48 ayat contained Jumlah Ismiyah or Mubtada’ Khabar.
Features of sociological analysis of religion of Russia during the imperial period of its history
Authors: Elishev S. O.
Published: October 2021

The article deals with the features of sociological analysis of religion in Russia during the imperial period of its history. The national sociological tradition of study of religion as a socio-cultural phenomenon and a social institution, which was developed during this period, had its own unique and peculiar appearance and was just begun to revive again in post-Soviet Russia, is sharply different from the tradition that took place in the West. In this context, the appeal to the works of classics of Russian religious, socio-political thought, unfortunately undeservedly forgotten, is a very promising area of modern sociological research. When studying this issue, the author emphasizes the peculiarities of the historical development of Russian society and the state and the events that had a significant impact on the formation and development of scientific understanding of religion in Russia: reforms of Peter I, the elimination of patriarchy, the independence of the Russian Orthodox Church, its transformation into part of the bureaucratic state system created by Peter I, the beginning of a large-scale process of secularization of Russian society, the emergence of Westernism (the direction of the Russian social thought and political ideology focused on values of the Western European culture, which is negative to the idea of originality, an originality, uniqueness of ways of development of the Russian culture, combined with the aspiration of representatives of this trend to impose to the Russian nation of a form of the western culture, social practice and political system, rejecting the system of values and traditional foundations of activity of the Russian society), the imperial nature of the Russian statehood and official imperial ideology. The author analyzes the content of the Uvarov’s triad formula, which underlies the official imperial ideology, as well as the discussions that took place between representatives of Slavophilism and Westernism about understanding the historical path and fate of Russia, the historical role of Orthodoxy, the Russian Orthodox Church in the fate of the Russian people, Russian society and the state, as well as the whole world. In his opinion, this problem has remained relevant to the present, including in the framework of a sociological analysis of religion in post-Soviet Russia.