LOWER DNIESTER (SNAKE) DEFENSIVE RAMPART:TOPOGRAPHY, ARCHAEOLOGY AND DATING

The Lower Dniester (Snake) Defensive rampart on the border of the Roman Empire is one of the largest and most significant objects of the ancient Roman fortification of the Northern Ponticregion but at the same time the most controversial and least known not only to general public but to professional historiansas well. Over the last decade, based on a detailed study of cartographic sources and materials of numerous archaeological surveys it has been possible to reconstruct completely the line of this rampart which turned out to be the longest of all earthen ramparts in Budzhak or Bessarabia (Sapozhnikov 2011; 2013; 2020a). This paper is devoted to such components of this unique monument of military architecture and engineering as topography and archaeology as well as relative and absolute dating both by traditional methods and by the method of soil-genetic chronology. Today we can say that the rampart runs on the right bank of the Dniester from the Sergeevka village near the Black Sea to the right bank of the river Botna near the Plop-Stubei village for 123—125 km, and the total length of this structure (with additional fortifications and protection of the camps) reached 134—136 km. Since the rampart lies on the Late Scythiansettlements Mologa II and Vesele III its terminus post quem can be defined as the early 3rd century AD. Terminus ante quem according to soil-chronological studies by F. N. Lisetsky is limited to the second half of the 3rd century AD. Based on the historical situation in Tyras and its environs during this period the authors concluded that such a significant structure was built by the Romans (or the local population under their leadership) in the first half of the 3rd century AD.

Anatomy of the sacroiliac joint

The sacroiliac joint, a multiplanar joint located in the dorsal complex of the pelvis, is one of the most important joints in the human to ensure upright and bipedal stability. The joint has been the subject of study for many years, but due to the presence of anatomic variability, challenges remain when analyzing its biomechanics in both normal and pathologic states. The joint is well vascularized and heavily innervated, making it a clinically significant structure with respect to primary, autoimmune, and traumatic disease processes. The chapter describes the gross anatomy of this joint as well as its embryologic origins, variability, and proposed movements as it relates to the joint’s potential for pathogenicity. This information will be useful to clinicians during diagnosis and radiographic evaluation of the patient with low back pain.

Wind in a Natural and Artificial Wildland Fire Fuel Bed

Fuel beds represent the layer of fuel that typically supports continuous combustion and wildland fire spread. We examine how wind propagates through and above loose and packed pine needle beds and artificial 3D-printed fuel beds in a wind tunnel. Vertical profiles of horizontal velocities are measured for three artificial fuel beds with prescribed porosities and two types of fuel beds made with long-leaf pine needles. The dependence of the mean velocity within the fuel bed with respect to the ambient velocity is linked to the porosity. Experimental results show significant structure to the vertical profile of mean flow within the bed, and suggest that small-scale sweeps and ejections play a role in this system redistributing momentum similar to larger-scale canopy flows.

Optimal Structure and Size of Multi-segment Soft Robotic Arms with Finite Element Method

Pneumatic actuate of multi-segment soft robotic arm is a significant structure and has extensive applications. However, the study of the optimal structure and size of multi-segment soft robotic arm has not been achieved. In this study, the finite element method is used to optimized the structure and size of soft robotic arm. We report that the two-segment structure of soft robotic arm has better performance for the general manipulator operation task through evaluating bending angles with different structures and parameters. The optimal ratio of the total length of non-cavity section to the total length of the soft robotic arm with two-segment is 0.21. And soft robotic arm performs better when the length of the fixed first section, the linkage section between two cavity sections and the end section are equal. Two cavities in each segment has more advantages in tasks of plane bending, while three cavities structure has better adaptability when the task need bend in the space. These results in this study provide a reference and simplify the process for the structure and size design of the multi-segment soft robotic arm in the future.

Building of the XVII century from the Volyntsevo settlement in the middle Sejm riverside

The article is devoted to the results of archaeological excavations of the Volyntsevo hillfort in 1981. The beginning of the study of this archaeological monument began at the beginning of the 20th century by the local landowner A. Shechkov. Part of the archaeological collection was transferred to the Kursk Museum. In 1948, research on the site was carried out under the leadership of V. Dovzhenko. In the northwestern part of the rampart, a rampart was cut. In 1981, O. Sukhobokov continued excavations of the hillfort. Their goal was to clarify the design features of the floor shaft. For this, two excavations were laid – the first in the center, the second in the northeastern part of the rampart. As a result of the research, part of the rock outgrowth was discovered, consisting of untreated cobblestones of local quartzite. It was located near the shaft, but it was not structurally connected with it. The stratigraphy of the rampart in excavation II indicates that the stone pavement is later than the remains of the rampart’s wooden structure. This construction is an independent archaeological site and, most likely, dates back to the period after the middle of the 13th century. Near the pavement, at a depth of 1.2 – 1.5 m, ground burials were found, made according to the Christian burial rite. This object may be the remains of the stone foundation of a significant structure that perished in a large fire. This is evidenced by a significant amount of ash, ash and burnt clay. It is known from documents that at the beginning of the 17th century, there was a noble estate near the hillfort, which belonged to Andrei Trifonov from the city of Putivl. The main type of planning of the noble small-manor estate was the manor’s yard with outbuildings and peasant houses. A wooden church was located nearby on a hill. The documents of the middle of the 17th century contain information that the church of St. Nicholas the Wonderworker was located on the territory of the Volyntsevo village, built before 1639 and burned down in 1663. Thus, it can be assumed that the remains of the stone foundation of a wooden church from the early 17th century. It burned down during the fire and was no longer recovered.

CNN and MLSTM based Sentiment Analysis

Dynamic of forthcoming purchasers are helped by item audits. For this, proposed different sentiment mining procedures. In this significant trouble lies in making a decision about direction of survey sentence. Issues of assumption order can be illuminated by utilizing a profound learning technique. In Mining of online client produced content, assumption investigation is a significant trouble. Audits of client are amassed in this work. It is obstinate substance's significant structure. Significant human endeavors are associated with conventional feeling arrangement strategies. Highlight designing and vocabulary development are its instances. Issues of estimation arrangement can be settled by utilizing a profound learning strategy. Without human endeavors, helpful portrayals can be adapted consequently by neural organization inherently. Accessibility of enormous scope preparing information characterizes the profound learning strategy's prosperity. For audit notion arrangement, novel profound learning structure is proposed in this work. Commonly accessible appraisals are utilized as frail management signal. There are two stages in this system. They are, elevated level portrayal getting the hang of, adding of grouping layer on top of inserting layer. For directed tweaking, marked sentences are utilized. Through rating data, sentences general supposition dissemination is caught utilizing this elevated level portrayal. Proficiency and predominance of proposed strategy is prepared by the experimentation done utilizing an Amazon's survey information.

La Torre de Comares en peligro de ruina. Afecciones de la estructura más significativa de la Alhambra en los siglos XVI y XVII

The Tower of Comares in danger of collapse. Affections in the most significant structure of the Alhambra during the sixteenth and seventeenth centuriesThis article develops a research on the outside layout of the Tower of Comares in the Alhambra (Granada), studying its transformations. It is focused on the interventions that took place at the most critical moment in its history. Between the last decades of the sixteenth century and the first ones of the seventeenth century, its general state of abandonment, the explosion of a nearby powder mill and the bad restauration practices applied in some cases, brought it to its structural limits, threatening its ruin. This process could fortunately be reversed after several technical reports on its injuries and actual conservation estate. If neglected, it would have led to the collapse of this paradigmatic example of the Nasrid regal defensive architecture.

Inner-Shell Photodetachment of Na− Using R-Matrix Methods

Inner-shell photodetachment of Na− near the L-edge threshold was investigated using the R-matrix method. Significant structure was found in the cross section, and this structure is shown to be related to the complicated correlated electron dynamics endemic in negative ions. Comparison with experiment suggests that the absolute values of the measured cross section might be too small by a factor of two.

Association of Fetal Nasal Bone Length And Gestational Age Between 14-28 Weeks of Pregnancy

Nasal bone (NB) is a significant structure to be assessed during pregnancy in 1st and 2nd trimesters. Nasal bones that start to grow as neural crest cells (NCCs) collections, can histologically be confirmed when length of fetal crown–ump is 42mm (10.9 weeks).

Effect of Electroacupuncture on gut Microbiota in Participants with Knee Osteoarthritis

Objective A close relationship between knee osteoarthritis and gut microbiota disorders has recently been described. Herein, we aim to investigate the effect of electroacupuncture on gut microbiota in participants with knee osteoarthritis.Methods We conducted a study of 60 participants with KOA and 30 matched healthy controls. Sixty participants with KOA were allocated to either electroacupuncture (EA) group (n=30) or sham acupuncture (SA) group (n=30). EA group was treated by five obligatory acupoints and three adjunct acupoints. Eight non-acupoints that were separated from conventional acupoints or meridians were used for the SA group. Both groups received 24 sessions within eight weeks. Faecal microbial analyses were carried out after collecting stools at T0 and T8 weeks, and microbiomes were analyzed by 16S ribosomal RNA gene sequencing. Results There was a significant structure difference of gut microbiota between KOA participants and healthy controls (HCs). Difference was observed in β-diversity analysis. Thirteen genera separated KOA from HCs, out of which Escherichia-Shigella, Streptococcus and Eubacterium_hallii group were increased in KOA participants, while Bacteroides, Blautia, Bifidobacterium, Faecalibacterium, Subdoligranulum, Prevotella, Lactobacillus, Ruminococcus, Agathobacter and Megamonas were decreased. After treatment, the amount of Streptococcus and Escherichia-Shigella in EA group had statistically decreased while Ruminococcus increased compared with SA group (all P<0.05). EA group decreased more in WOMAC pain, WOMAC total score (all P<0.05) and NRS score (P=0.002) than those in SA group at eight weeks. Adverse events were low and similarly distributed between groups. Ruminococcus and the total score of WOMAC was negatively correlated (P=0.044). Streptococcus was positively correlated with WOMAC total score (P=0.044) and Escherichia-Shigella was positively correlated with NRS score (P=0.024).Conclusion This study presents a comprehensive landscape of gut microbiota in KOA. EA could reduce pain by regulating the intestinal flora of KOA participants. Dysbiosis was found in the gut microbiome in KOA and partially relieved by electroacupuncture. Our study suggests that gut microbiota could be a potential therapeutic target and diagnostic biomarker for KOA.