Complete Defect Research Articles

Interrupted Aortic Arch with Complete Atrioventricular Canal Defect: Insights from CT Imaging.

Interrupted Aortic Arch with Complete Atrioventricular Canal Defect: Insights from CT Imaging.

High-Quality Subsurface Construction of Perovskite Film for Efficient and Stable Solar Cells.

The subsurface of perovskite (PVK) triggers non-radiative recombination and initiates film degradation due to the impurities and defects. This study investigates the limitations of the conventional surface post-treatment and proposes an innovative pre-treatment strategy to achieve complete impurity elimination and defect passivation of the subsurface. The considerable activity of unannealed PVK films provides a sufficient basis for effective subsurface modification. Following the pre-treatment, the cadmium ions (Cd2+) can occupy the lead (Pb) vacancies or substitute lead ions(Pb2+), while the introduced ionic ions (I-)are able to fill the ionic (I) vacancies. The stronger ionic bond between Cd2+ and I- helps prevent the loss of I-, leading to a reduction of defects in film, inhibiting non-radiative recombination and ionic migration at the interface. This innovative strategy successfully eliminates impurities and passivates defects, resulting in a perovskite subsurface characterized by high crystallinity, low defect density, and minimal impurity. These enhancements contribute to enhanced open circuit voltage (VOC)and fill factor (FF), leading to an impressive power conversion efficiency (PCE) of 24.49%. Notably, after 1600 h of aging in ambient air, the cell retained 87% of its initial performance.

Image enhancement method for paint defects based on polarization fusion technique

The highly reflective nature of paint surfaces poses a challenge for defect detection. In this paper, a polarization fusion based image enhancement algorithm for paint defects is proposed to improve the image quality and complement the masked defect details. Firstly, the linearly polarized photometric (DOLP) image is initially fused with the angle of polarization (AOP) image. The light intensity images and polarization feature images were enhanced using a single scale Retinex algorithm and these images were decomposed and reconstructed using wavelet transform to integrate the low and high frequency subbands based on saliency maps and regional energy features. Experiments were performed on defects at different locations and compared with other classical methods. The results show that the proposed fusion algorithm improves the contrast while providing more complete defect information, clearer texture details and significant advantages over other algorithms.

Common Atrium Concurrent with Atrioventricular Septal Defect: A Case Report

Common atrium accounts for 0.5% to 1% of congenital heart diseases. It is characterized by the atria septum's complete absence and atrioventricular canal defect. It may occur as an isolated malformation or associated with other extracardiac anomalies. Untreated cases are at risk of developing pulmonary hypertension. We present a case of an 18-month-old female baby with a recurrent chest infection, central cyanosis, and echocardiographic features of the common atrium concurrent with atrioventricular canal defect and features of pulmonary hypertension.

PECULIARITIES OF TEACHING THE DISCIPLINE "ORTHOPEDIC DENTISTRY, INCL. IMPLANTATION" SPP DENTISTRY AT MILITARY CONDITION

In the conditions of rapid development of modern dentistry, the providing of high-quality dental services is extremely important and requires the presence of qualified specialists. Therefore, their acquisition of professional competences should take place starting from the student ranks. Educational discipline "Orthopedic dentistry, incl. implantation" OPP Dentistry is studied by students during 3-5 courses and ensures that students acquire integral, general and professional competencies for the future provision of high-quality dental consultations and services with the use and application of modern aesthetic orthopedic structures for the replacement of partial and complete defects of the dentition, as well as elimination of pathology, which contributes to the occurrence of defects in the hard tissues of the teeth. In addition, the process of examining patients in order to establish a diagnosis and draw up a treatment plan is important. Therefore, the application of the latest teaching methods includes a combination of both theoretical knowledge and practice and consolidation of acquired and properly mastered practical skills. The education of foreign students is of great importance, which, in connection with military actions and constant air alerts caused by the danger caused by the activity of enemy strategic aviation taking place in our country, is conducted in a mixed format (online for students who are at home (by border) and offline for foreign students living and studying in Ukraine) using innovative multimedia teaching methods. The constant and continuous development of modern technologies in the field of stomatology also requires the introduction of the latest training tools and methods associated with the use of modern methods and technological support. All these challenges today are combined with student education, which takes place under martial law and requires a special approach. Therefore, it is important to provide education seekers with proper professional and safe learning conditions, which will make it possible to fully and comprehensively provide a comprehensive complex of both theoretical and practical training of future dental specialists. Thanks to the Armed Forces of Ukraine and the clear consolidation and mutual cooperation of teachers and students, the learning process not only does not stop, but also continues to develop productively, making it possible to provide and provide a sufficient amount of professional competences under the condition of simultaneous and parallel objective control of the acquisition and consolidation of appropriate level of knowledge of students of all courses and areas of dentistry. The purpose of the study is directed to the organization and implementation of the latest teaching methods with the maximum use of modern equipment and methods while respecting life safety. Materials and methods. The Department of Orthopedic Dentistry of the Ivano-Frankivsk National Medical University implements the educational program "Orthopedic Dentistry, incl. implantation" SPP Dentistry in military time conditions, aimed at students' acquisition of integral, general and professional competencies for the future provision of high-quality dental services. Research results. They indicate the need to introduce the latest actions and methods of training in connection with the constant development of modern technologies in the branch of dentistry. The conclusions of this study indicate the presence of feedback from students who is interested and stimulated by a new approach in studying, combined with real clinical cases and modern methods of their treatment and orthopedic treatment.

Hand and wrist complete degloving: A case report and litterature review

Complete hand degloving injuries are traumatic avulsion injuries causing the skin to pull away from the underlying tissues and are most often caused by industrial machinery. We present the case of a degloving trauma of the whole fingers, hand, and wrist resulting in a "watch hand" by analogy with the "ring finger" and discuss alternatives and recommendations from the rare cases described of similar traumas. A 33-year-old manual worker, a non-smoker with no significant medical or surgical comorbidities, was admitted for a complete skin avulsion of the left hand and wrist following a work-related accident with a trommel-type industrial roller. Our approach covered the five fingers and the dorsal aspect of the hand and wrist with an artificial dermal matrix, while the palmar side of the hand and wrist was covered with a pedicled groin flap in emergency. At 15months, the patient's sensitivity was classified as S1 on the sensory evaluation scale, joint mobility was less than 30°, and the residual hand retained what we might call "basic" functions, i.e., a counterweight when carrying loads and the ability to pick up and hold a light object in the thumb-index grasp. Complete soft tissue hand defects are exceptional and require urgent treatment. If re-implantation is not possible, combining a dermal matrix with a pedicled flap is a simple salvage solution. The risks of vascular, infectious, and stiffening complications in these traumas are high and must be prevented. Patients must be warned of the severity of the trauma, the need for secondary surgeries to restore a policy-digital grip, and the poor functional results expected.

Evolution of cooperation with asymmetric rewards

Rewards, as a form of positive reinforcement, effectively encourage cooperation. In this paper, we study a multi-population prisoner's dilemma game with asymmetric rewards, where agents in the same population play prisoner's dilemma game, and agents from the giver population can reward agents from the recipient population only if they make the same choice. In well-mixed populations, asymmetric rewards can facilitate cooperation. Similarly, asymmetric rewards on the regular square lattice can effectively prevent complete defection. In both well-mixed and structured populations, seemingly disadvantageous cooperative givers play an important role in the maintenance and spread of cooperation. Especially on lattice, cooperative givers with asymmetric rewards can be active in the system through diverse cases of cyclic dominance. Our findings provide deeper insights into the impact of asymmetry on cooperative behavior and the development of altruistic behavior in real-world scenarios.

Advanced Wound Healing and Scar Reduction Using an Innovative Anti-ROS Polysaccharide Hydrogel with Recombinant Human Collagen Type III.

Excessive fibrotic scar formation during skin defect repair poses a formidable challenge, impeding the simultaneous acceleration of wound healing and prevention of scar formation and hindering the restoration of skin integrity and functionality. Drawing inspiration from the structural, compositional, and biological attributes of skin, we developed a hydrogel containing modified recombinant human collagen type III and thiolated hyaluronic acid to address the challenges of regenerating skin appendages and improving the recovery of skin functions after injury by reducing fibrotic scarring. The hydrogel displayed favorable biocompatibility, antioxidant properties, angiogenic potential, and fibroblast migration stimulation in vitro. In a rat full-layer defect model, it reduced inflammation, promoted microvascular formation, and significantly enhanced the wound healing speed and effectiveness. Additionally, by upregulating fibrosis-associated genes, such as TGFB1, it facilitated collagen accumulation and a beneficial balance between type I and type III collagen, potentially expediting skin regeneration and functional recovery. In conclusion, the utilization of rhCol III-HS demonstrated considerable potential as a wound dressing, offering a highly effective strategy for the restoration and rejuvenation of complete skin defects.

Guided bone regeneration at dehiscence comparing synthetic bone substitute versus bovine bone mineral: A multicenter, noninferiority, randomized trial.

To evaluate the efficacy of guided bone regeneration (GBR) for the treatment of peri-implant dehiscence defects using a synthetic bone substitute (SBS) or a deproteinized bovine bone mineral (DBBM) as a bone substitute. Patients with expected dehiscence defects following implant placement were randomized to use either SBS or DBBM together with a bioabsorbable collagen membrane over dehiscenced implant surfaces aimed for GBR. The changes in the bone defect size were measured before the GBR procedure and 6 months after implant placement at the re-entry surgery. Secondary outcomes included peri-implant health outcomes, implant cumulative survival rates, bone level changes, and patient-reported outcomes (PROMs) at prosthesis delivery and 1-year follow-up. Of the 49 included patients, 24 were treated with SBS and 25 with DBBM. In the SBS group, the defect height (DH) at implant insertion was 5.1 ± 2.6 mm and was reduced at re-entry to 1.3 ± 2.0 mm (74.5%). In the DBBM group, the respective changes in DH were 4.1 ± 1.7 mm and 1.5 ± 1.9 mm (63.4%). These differences were not statistically significant (p = 0.216). The complete defect resolution rate was also comparable in both groups without statistical difference (62.5% of patients (15/24) vs. 44% of patients (11/25)). Overall, the marginal bone levels remained stable during the 1-year follow-up in both groups. The SBS is noninferior to DBBM for simultaneous GBR to implant placement at implant sites with buccal dehiscences in terms of defect resolution and evaluated secondary outcomes (KCT0008393 - this clinical trial was not registered before participant recruitment and randomization).

Extent of Complete Retinal Pigment Epithelial and Outer Retinal Atrophy with Foveal Center Involvement is Associated with Visual Acuity

PurposeTo evaluate the optical coherence tomography (OCT) images of eyes with fovea-involved complete retinal pigment epithelial and outer retinal atrophy (cRORA) as well as best-corrected visual acuity (BCVA) to explore the pathogenesis of visual impairment and atrophy. DesignRetrospective observational study. SubjectsData of eyes with cRORA associated with age-related macular degeneration with foveal center involvement were collected from 10 hospitals in Japan. MethodsOphthalmic examination data, BCVA, and extents of RORA, represented by choroidal hyper-transmission, and outer plexiform layer (OPL) deterioration, central retinal thickness (CRT), and central choroidal thickness (CCT) measured using built-in software on the sectional OCT images were evaluated. Main Outcome MeasuresRelationship between BCVA and extents of RORA and OPL deterioration. ResultsOf the 64 eyes of 64 patients (mean age; 76.8 ± 9.5 years old), 38 eyes (59.4%) belonged to men. Mean BCVA was 0.602 ± 0.475 (median: 0.523; range, -0.079 to 1.523) in logMAR. Mean extent of RORA was 2,921 ± 1,291 (median: 3172; range: 479-5,985) μm. BCVA in logMAR positively correlated with extents of RORA (P=0.004) and OPL deterioration (P=0.004) and negatively correlated with CRT (P=0.022). BCVA ≥ 0.5 was associated with extents of RORA ≥ 3,000μm (Odds Ratio [OR], 4.227; 95% Confidence Interval [95% CI], 1.440-12.408; P=0.009) and OPL deterioration ≥ 1,700μm (OR, 2.984; 95% CI, 1.034-8.609; P=0.043), and presence of complete central OPL defect (cCOD) (OR, 12.700; 95% CI, 2.439-66.132; P=0.003), after adjusting for age and sex. The extent of RORA ≥ 3000μm was associated with BCVA ≥ 0.5 (OR, 4.213; 95% CI, 1.437–12.356; P=0.009), extent of OPL deterioration ≥ 1,700μm (OR, 58.682; 95% CI, 6.865-501.592; P<0.001), and presence of cCOD (OR, 4.107; 95% CI, 1.339-12.604; P=0.014), after adjusting for age and sex. The extent of RORA positively correlated with that of OPL deterioration (P<0.001), CRT (P=0.001), and CCT (P=0.041). ConclusionsA longer extent of cRORA in the OCT images with foveal center involvement was associated with a longer extent of OPL deterioration and the presence of cCOD, and worse BCVA. Further studies focusing on OPL changes are warranted for understanding the pathogenesis of RORA and vision loss.

Evolution of cooperation with the diversity of cooperation tendencies

The complete cooperation and the complete defection are two typical strategies considered in evolutionary games in many previous works. However, in real life, strategies of individuals are full of variety rather than only two complete ones. In this work, the diversity of strategies is introduced into the weak prisoners’ dilemma game, which is measured by the diversity of the cooperation tendency. A greater diversity means more cooperation tendencies are provided. The complete cooperation strategy is the full cooperation tendency and the complete defection strategy is without any cooperation tendency. Agents with other cooperation tendencies are partial cooperative and defective. The numerical simulation shows that increasing the diversity of the cooperation tendency promotes the cooperation level, not only the number of cooperators but also the average tendency over the whole population, until the diversity reaches its saturated value. Furthermore, our work points out maintaining cooperation is based on the cooperation efficiency. When cooperator clusters can survive the cooperation efficiency slightly oscillates around its equilibrium. When cooperator clusters cannot resist the invasion of defectors the cooperation efficiency oscillates and quickly decreases to zero. The observations above is not only applied on the weak prisoner’s dilemma but also the snowdrift game. When the effect of the noise for the Femi update mechanism is considered, a greater diversity of strategies not only improves the cooperation level of the whole population but also supports the survival of more rational agents.

The spectrum of clinical, hormonal findings in children with congenital adrenal hyperplasia in Isfahan province; a 20-year review.

Congenital adrenal hyperplasia is an autosomal recessive disorder caused by complete or partial defects in one of the several steroidogenic enzymes involved in synthesizing of cortisol from cholesterol in the adrenal gland. Prompt and proper treatment of the disease would reduce symptoms and the level of androgens in patients. The present study aimed to evaluate the demographic characteristics and clinical findings of these patients. This retrospective investigation was conducted in 146 patients with congenital adrenal hyperplasia participated. Their clinical and paraclinical findings were accurately recorded in the file and extracted from the records. Among all 146 patients, 119(81.5 %) was 21-OH Deficiency type;11-OH Deficiency type was 13(8.9 %), 10(6.8 %) was 3β-HSD type, StAR was 2(1.4 %) and 17 alpha(α)-hydroxylase Deficiency was 2(1.4 %). The mean age of disease onset in these patients was 2.45±1.16 years. Macropenis was the most frequent clinical finding in 39 cases of 64 boys (60.9 %), and Clitoromgaly was the most clinical presentation in 40 cases of 82 girls (48.7 %). The levels of testosterone, dehydroepiandrosterone sulfate, and 17-OHP significantly decreased in the last visit compared to the initial diagnosis. Based on the clinical findings in every infant or child with ambiguous genitalia, macropenis, clitoromegaly, hirsutism, and premature pubarche, we should consider congenital adrenal hyperplasia. Prompt and proper treatment and disease control would reduce symptoms and the level of androgens in patients.

Prediction of the Upwarp Buckling Critical Temperature Rise for Longitudinally Connected Slab Track Under Joint Damage State

The joint of longitudinally connected slab track is vulnerable to damage from environmental impacts and repeated train loads. Under high temperature environments, the joint becomes a high risk area for track slab upwarp, which significantly affects the upwarp stability of the track slab and the safe operation of trains. This study employs the arc length approach and a finite element model to investigate the upwarp equilibrium development path of the track slab, the upwarp evolution process of the track slab under the joint damage is further analyzed. Then, the influence of different initial defects on the vertical stability of the track slab is studied. Utilizing dimensional analysis, a general formula for calculating the critical temperature rise of the track slab is proposed. The results are as follows: (1) The entire upwarp process of track slab under joint damage can be divided into three stages: stability, upwarping development, and instability. (2) A nonlinear correlation exists between the upwarp critical temperature rise of the track slab and three types of initial defects. Height defects in narrow joints exert the most significant impact on the critical temperature rise, followed by initial Out-of-straight (initial OOS), with the initial bending shape having the least effect. The complete defect of the narrow joint reduces the upwarp critical temperature rise of the track slab by 53.26°C, a 48.4% reduction. (3) A unified expression, derived from the characteristic parameters of initial defects and dimensional analysis, can more accurately predict the upwarp critical temperature rise of the track slab.

A robust domain distribution alignment discriminative network driven by physical samples for rotor-bearing fault diagnosis

The diagnostic performance of most intelligent models depends on having a sufficient number of labeled samples, which are difficult to obtain in real-world scenarios. Physics-guided sample generation emerges as a promising remedy for addressing the scarcity of labeled samples during model training. However, existing studies have tended to overlook the coupling effect between the marginal and conditional distributions of physical and real samples, leading to domain confusion and a subsequent reduction in model generalization and diagnostic accuracy. Therefore, this study introduces a novel approach: the physically driven sample-based domain distribution alignment discriminative network (DDADN), which integrates dynamic modeling and domain adaptation. Specifically, a lumped parameter model is established to generate complete defect samples, subsequently optimized using the Pearson correlation coefficient (PCC). Next, an enhanced joint distribution adaptation (EJDA) mechanism is employed to harmonize distributions across domains, effectively aligning both overall and class-specific distributions within the domains and thus achieving adaptive domain confusion. Meanwhile, to ensure robust feature classification and extraction, an adaptive softmax (A-softmax) loss function is introduced. Finally, in unlabeled real operating conditions, the proposed multitask scheme adeptly transfers knowledge between physical and real signals, yielding impressive classification accuracies of 97.78% and 98.34% for the experimental and Case Western Reserve University (CWRU) datasets, respectively. These results underscore the superiority of the proposed scheme in terms of learning transferable features and maintaining high diagnostic accuracy and generalization capability.

Visual Field Improvement in Non-Arteritic Posterior Ischemic Optic Neuropathy in a Patient Treated with Intravenous Steroids

A 50-year-old man presented with a nasal visual field defect in the left eye. His medical history was unremarkable. On ophthalmic examination, his best-corrected visual acuity (BCVA) was 1.2 in both eyes. Fundoscopy revealed no abnormalities in either eye. Goldmann visual field test showed a nasal visual field defect in the left eye. The patient was diagnosed with NPION of the left eye and was followed up without treatment. However, four days after the initial visit, his BCVA decreased to counting finger in the left eye. Goldmann visual field test showed a complete nasal visual field defect with central absolute scotoma. Following admission, the patient was treated for 3 days with intravenous methylprednisolone pulse therapy. Three months later, his BCVA was improved to 0.8 in the left eye, but central relative scotoma was remained. Six months later, his BCVA was maintained at 0.8, and central relative scotoma was disappeared. However, the optic disc looked diffusely pale in the left eye. This case highlights that steroid therapy is an option for severe cases with posterior ischemic optic neuropathy.

Double outlet right ventricle accompanied by complex congenital anomalies: A rare association

Double outlet right ventricle (DORV) comprises a heterogeneous series of associated cardiac anomalies that involve the RV outflow tract in which both of the great arteries arise entirely or predominantly from the RV. The anatomic dysmorphology is variable, and there may be associated cardiac anomalies. We report here a case of a complex cyanotic heart disease in a 14 year old adolescent comprising of DORV accompanied by multiple congenital cardiac anomalies: single atrium, complete AV canal defect, severe AV valve regurgitation, D-malposition of great arteries, subaortic obstruction and pulmonary valvular stenosis.

Glass Defect Detection with Improved Data Augmentation under Total Reflection Lighting

To address the technical challenge of identifying tiny defects, especially dust and point defects, on mobile phone flat glass, an automatic optical inspection system is established. The system investigates algorithms including imaging principles, target detection models, data augmentation, foreground segmentation, and image fusion. The system builds an automatic optical inspection platform to collect glass defect samples. It illuminates the glass samples with a combined total reflection–grazing light source, collects the defect sample data, segments the background and defects of the collected data, generates the defect mask, and extracts the complete defects of the cell phone flat glass. The system then seamlessly integrates the extracted defects with a flawless background using Poisson editing and outputs the location information of the defects and the label output to automatically generate the dataset. The deep learning network YOLOv5 works as the core algorithm framework, into which the Constructive Block Attention Module and the small target detection layer are specifically added to enhance the capability of the model to detect small defects. According to the experimental results, the combined lighting effectively improves the precision of detecting dust and bright spots. Additionally, with the adoption of novel data augmentation techniques, the enhanced YOLOv5 model is capable of effectively addressing the challenges posed by inefficient sample data and non-uniform distribution, thus mitigating network generalization issues. Furthermore, this data augmentation approach facilitates the rapid adaptation of the same detection tasks to diverse environmental scenarios, enabling the expedited and efficient deployment of the model across various industrial settings. The mean average precision (MAP) of the optimal model in the validation set reached 98.36%, 2.62% higher than that of the original YOLOv5. In addition, its false acceptance rate (FAR) is 1.27%, its false rejection rate (FRR) was 2.47%, its detection speed was 64 fps, and its correct detection rate in the validation set was 98.75%, which meets the current industrial detection requirements by and large. In this way, this paper achieved the automated inspection of mobile phone flat glass with high robustness, high precision, and a low false acceptance rate and false rejection rate, significantly reducing material losses in the factories and the likelihood of error occurrence in follow-on products. This method can be applied to the multi-scale and multi-type detection of glass defects.

Adaptive payoff-driven interaction in networked snowdrift games

In social dilemmas, most interactions are transient and susceptible to restructuring, leading to continuous changes in social networks over time. Typically, agents assess the rewards of their current interactions and adjust their connections to optimize outcomes. In this paper, we introduce an adaptive network model in the snowdrift game to examine dynamic levels of cooperation and network topology, involving the potential for both the termination of existing connections and the establishment of new ones. In particular, we define the agent’s asymmetric disassociation tendency toward their neighbors, which fundamentally determines the probability of edge dismantlement. The mechanism allows agents to selectively sever and rewire their connections to alternative individuals to refine partnerships. Our findings reveal that adaptive networks are particularly effective in promoting a robust evolution toward states of either pure cooperation or complete defection, especially under conditions of extreme cost-benefit ratios, as compared to static network models. Moreover, the dynamic restructuring of connections and the distribution of network degrees among agents are closely linked to the levels of cooperation in stationary states. Specifically, cooperators tend to seek broader neighborhoods when confronted with the invasion of multiple defectors.

Predicting surgical outcome by echocardiography in complete atrioventricular canal defect repair.

Predicting surgical outcome by echocardiography in complete atrioventricular canal defect repair.

A new through-the-scope clip with anchor prongs is safe and successful for a variety of endoscopic uses.

Background and study aims Endoscopic through-the-scope clips (TTSC) are used for hemostasis and closure. We documented the performance of a new TTSC with anchor prongs. Patients and methods We conducted a prospective case series of the new TTSC in 50 patients with an indication for endoscopic clipping at three hospitals in the United States and Canada. Patients were followed for 30 days after the index procedure. Outcomes included defect closure and rate of serious adverse events (SAEs) related to the device or procedure. Results Fifty patients had 56 clipping procedures. Thirty-four procedures were clipping after endoscopic mucosal resection (EMR) in the colon (33) or stomach (1), 16 after polypectomy, two for hemostasis of active bleeding, and one each for fistula closure, per-oral endoscopic myotomy mucosal closure, or anchoring a feeding tube. Complete defect closure was achieved in 32 of 33 colon EMR defects and 21 of 22 other defects. All clips were placed per labeled directions for use. In 41 patients (82.0%), prophylaxis of delayed bleeding was reported as an indication for endoscopic clipping. There were three instances of delayed bleeding. There were no device-related SAEs. The only technical difficulty was one instance of premature clip deployment. Conclusions A novel TTSC with anchor prongs showed success in a range of defect closures, an acceptable safety profile, and low incidence of technical difficulties.