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This paper analyzes and combs the application and research status of artificial intelligence technology in the field of military intelligence, in order to provide reference for subsequent military intelligence research. This paper summarizes the development and application of artificial intelligence in military intelligence work from the aspects of intelligence analysis and military command decision-making. Based on the intelligence workflow, the military intelligence service model under artificial intelligence technology is analyzed. This paper systematically combs the research and development status of typical projects of intelligent intelligence systems in the United States, and analyzes the key development trends and technical difficulties of artificial intelligence in the military intelligence field.

At present, most of the poetry generation models use keywords provided by users to generate poems that conform to the rules of rhythm and fluctuations in pitch. Because keywords contain less semantic information, it is difficult to guarantee the quality of generated poems, and the phenomenon of contextual theme shift is likely to occur. In response to this problem, this paper proposes a generative model based on conditional variational autoencoders, which can generate poems that are more in line with keyword descriptions and user satisfaction under the guidance of richer semantic information. By sampling human poetry and introducing additional semantic information related to keywords, the model effectively estimates the prior probability distribution of the conditional variational autoencoder, and generates a prior probability that more closely matches the true distribution. Because this model automatically expands keyword information, it narrows the gap between input and output semantic information, and alleviates the over-translation problem that is common in previous models. Experimental results show that the proposed model has better results than other models in both automatic and human evaluation, successfully reduces the frequency of over-translation problems and improves the fluency of generated poetry. By changing the range of sampling, controlling the writing style of the generated poetry is successfully achieved, which further shows the effectiveness of the algorithm proposed in this paper.

In order to study the micro-vibration characteristics of satellite platform and the effect of micro-vibration on the payload in space,a six-dimensional disturbance force simulator is designed to simulate the micro-vibration in space. First,the theoretical modeling analysis of the six-dimensional disturbance force simulator was performed. Secondly,the structure design of the uniaxial actuator and simulator model were performed and the finite element simulation analysis was applied on the models.Finally,the uniaxial actuator modal test was carried out and the simulator perturbation force experiment was performed. The results show that the error between the modal test results and finite element simulation analysis results of the single axis actuator does not exceed 2. 46 %; the error between the experimental results of the six-dimensional disturbance force simulator and the results of the disturbance force theoretical analysis is within 5%. Therefore,the six-dimensional disturbance force simulator meets the design requirements.

Electrochemical property of metal organic frameworks (MOFs) conductive cotton fabric was studied. Solvothermal method was adopted. Cobalt nitrate hexahydrate was used as metal ion source. Conductive cotton fabric was prepared by in-situ growth of metal organic frameworks on chemical nickel-plating cotton fabric. The structural characterization and electrochemical property of the fabric were tested. The test results showed that metal organic frameworks with layered structure could be grown on conductive cotton fabric after electrochemical oxidation pre-treatment. It was mainly CoMOFs with few Ni2+ mixed. MOFs conductive cotton fabric was used as electrode. In 2 mol/L KOH solution, when electric current density was 3 mA/cm², the area specific capacitance was reached 4 475 mF/cm². It showed excellent multipling power property. When electric current density was 15 mA/cm², it had 85.4% capacitance retention rate. It is considered that the prepared MOFs conductive cotton fabric has excellent electrochemical property. [ABSTRACT FROM AUTHOR]

Reasonable petrochemical plant layout and adequate protection distances play an important role in the prevention accidents. The results show that the petrochemical plant layout should be organized according to different functional zones and occupied buildings should be away from the source of danger. Functional zones are divided by inter-block corridor, and fire-fighting roads are reasonably set by the standards. The fire separation distance should meet the requirements of GB 50160 "Standard for fire prevention design of petrochemical enterprises" and GB 50016 "Code for fire protection design of buildings". Anti-explosion space is determined according to the safety quantitative risk assessment, and the risk is controlled so as to reduce the probability of major accident disasters and secondary disasters. [ABSTRACT FROM AUTHOR]

Aiming at the problem of high cost, poor reliability, complicated structure and low-efficiency assembly of the traditional four-wheel electric mower braking mechanism, we designed a new kind of blade braking mechanism which can brake within the 3s without independent mechanism. It can reduce the cost of product and improve product competitiveness and market satisfaction. [ABSTRACT FROM AUTHOR]

Objective: To prepare a new plastic bone filler material with adhesive carrier and matrix particles derived from human bone, and evaluate its safety and osteoinductive ability through animal tests., Methods: The human long bones donated voluntarily were prepared into decalcified bone matrix (DBM) by crushing, cleaning, and demineralization, and then the DBM was prepared into bone matrix gelatin (BMG) by warm bath method, and the BMG and DBM were mixed to prepare the experimental group's plastic bone filler material; DBM was used as control group. Fifteen healthy male thymus-free nude mice aged 6-9 weeks were used to prepare intermuscular space between gluteus medius and gluteus maximus muscles, and all of them were implanted with experimental group materials. The animals were sacrificed at 1, 4, and 6 weeks after operation, and the ectopic osteogenic effect was evaluated by HE staining. Eight 9-month-old Japanese large-ear rabbits were selected to prepare 6-mm-diameter defects at the condyles of both hind legs, and the left and right sides were filled with the materials of the experimental group and the control group respectively. The animals were sacrificed at 12 and 26 weeks after operation, and the effect of bone defect repair were evaluated by Micro-CT and HE staining., Results: In ectopic osteogenesis experiment, HE staining showed that a large number of chondrocytes could be observed at 1 week after operation, and obvious newly formed cartilage tissue could be observed at 4 and 6 weeks after operation. For the rabbit condyle bone filling experiment, HE staining showed that at 12 weeks after operation, part of the materials were absorbed, and new cartilage could be observed in both experimental and control groups; at 26 weeks after operation, the most of the materials were absorbed, and large amount of new bone could be observed in the 2 groups, while new bone unit structure could be observed in the experimental group. Micro-CT observation showed that the bone formation rate and area of the experimental group were better than those of the control group. The measurement of bone morphometric parameters showed that the parameters at 26 weeks after operation in both groups were significantly higher than those at 12 weeks after operation ( P <0.05). At 12 weeks after operation, the bone mineral density and bone volume fraction in the experimental group were significantly higher than those in the control group ( P <0.05), and there was no significant difference between the two groups in trabecular thickness ( P >0.05). At 26 weeks after operation, the bone mineral density of the experimental group was significantly higher than that of the control group ( P <0.05). There was no significant difference in bone volume fraction and trabecular thickness between the two groups ( P >0.05)., Conclusion: The new plastic bone filler material is an excellent bone filler material with good biosafety and osteoinductive activity.

As the robotic assisted single port surgery arousing attention, a novel single-arm single-port micro-traumatic laparoscopic robotic surgical system is proposed in this study. From the perspective of the mechanics, joints with high rigidity and high reliability were utilized to realize the remote center of motion (RCM). Besides, the cost of consumables was reduced by adding the support of the rigid endoscope. From the perspective of the algorithm, high-precision motion control method and feedback force protection mechanism were implemented. The effectiveness of the aforementioned characteristics were verified by five clinical experiments of cholecystectomy. The results showed that the system is able to reduce the amount of bleeding, accelerate the patient recovery, reduce the infection risk and shorten the learning period. The robotic surgical system had significant clinical application value.

Objective: To study the preservation effect of true bone ceramics (TBC) prepared by high-temperature calcination of bovine bone on alveolar ridge of canine extraction socket., Methods: Six healthy Beagle dogs (aged 1.5-2 years) were selected to extract the second and fourth premolars of both mandibles and the second premolars of the maxilla. The left extraction socket was implanted with TBC as the experimental group, and the right side was implanted with the calcined bovine bone (CBB) as the control group, to observe the alveolar ridge preservation effect. Three dogs were euthanized after general observation at 1 and 6 months after operation respectively. After separating the maxilla and mandible, cone beam CT (CBCT) was performed to measure the average gray value of the graft site and the adjacent reference area (the area between the roots of the adjacent third premolar) and calculate the gray scale ratio between the bone graft site and the reference area. Histological observation was made on the bone graft site to evaluate the new bone formation., Results: General observation showed that the wounds of both groups were basically healed at 2 weeks after operation, and the bone graft materials were not exposed. The wounds healed well at 1 and 6 months after operation without swelling. The results of CBCT showed that the residual material was found in both groups at 1 month after operation, and no significant residual material was found in both groups at 6 months after operation, and the alveolar ridge height of the bone graft area was not significantly reduced. There was no significant difference in the bone mineral density between the experimental group and the control group. The gray scale ratios of the experimental group at 1 month and 6 months after operation were 0.97±0.14 and 0.93±0.06, respectively, and were 0.99±0.16 and 0.94±0.05 in control group, showing no significant difference between the two groups ( t =-1.030, P =0.333; t =-0.770, P =0.466). HE staining observation showed that a large number of bone graft materials did not degrade and new bone formed around the grafts in both groups at 1 month after operation; the bone graft materials were absorbed and a large number of new bones were formed in both groups at 6 months after operation., Conclusion: TBC can maintain bone mineral density and have good osteoconductivity in the alveolar ridge site preservation experiment of dogs, and can be used for alveolar ridge site preservation.

Objective: To investigate the biocompatibility of true bone ceramic (TBC) and provide experimental basis for clinic application., Methods: TBC was prepared from healthy adult bovine cancellous bone by deproteinization and high temperature calcinations. Mouse fibroblast cell line (L929 cells) were cultured with the leaching liquor of TBC in vitro , and the cytotoxicity was evaluated at 2nd, 4th, and 7th days. L929 cells were inoculated into the TBC and cultured for 4 days. The cell adhesion and proliferation on the surface of the TBC were observed by scanning electron microscopy, and evaluated the cell compatibility of TBC. Ten New Zealand white rabbits were divided into 2 groups, and drilled holes at the tibia of both hind limbs. TBC and hydroxyapatite (HA) were implanted into the left side (experimental group) and the right side (control group), respectively. And the biocompatibility of TBC was evaluated by general observation and histological observation at 4 and 26 weeks after implantation., Results: Cytotoxicity test showed that the cytotoxicity level of leaching liquor of TBC was grade 0-1. Cell compatibility experiments showed that the L929 cells adhered well on the surface of TBC and migrated into the pores. The implantation test in vivo showed that experimental group and control group both had mild or moderate inflammatory response at 4 weeks, and new bone formation occurred. At 26 weeks, there was no inflammatory reaction observed in both groups, and new bone formation was observed in varying degrees., Conclusion: TBC have good biocompatibility and can be used to repair bone defect in clinic.

Objective: To research the effect of porcine acellular dermal matrix in the reconstruction of abdominal wall defects in rabbits, and to investigate the application feasibility of xeno-transplantation of acellular dermal matrix., Methods: The porcine acellular dermal matrix was prepared from a health white pig. Twenty-six Japanese white rabbits (weighing 2.2-2.3 kg, female or male) were randomly assigned to 2 groups: the control group (n=6) and the experimental group (n=20). In the control group, the full-thickness abdominal wall defect of 5.0 cm x 0.5 cm was made, and the defect was sutured directly; in the experimental group, the full-thickness abdominal wall defect of 5.0 cm x 2.5 cm was made, and the defect was repaired with porcine acellular dermal matrix patch at the same size as the defect. At 5 weeks after surgery, the incidence of hernia and the intra-abdominal adhesions were observed and the wound breaking strength was compared between the patch-fascia interface and the fascia-fascia interface. The graft vascularization was evaluated through histological analysis at 6 months after surgery in the experimental group., Results: No hernia occurred in all rabbits of 2 groups. At 5 weeks after surgery, healing was observed between patch and the muscular fascia; the vascularization was seen in the porcine acellular dermal matrix patch. There was no significant difference in the adhesion grade (Z= -0.798, P=0.425) between the experimental group (grade 2 in 1 rabbit, grade 1 in 5, and grade 0 in 12) and the control group (grade 1 in 1 and grade 0 in 5). No significant difference was found (t= -0.410, P=0.683) in the breaking strength between the patch-fascia interface in the experimental group [(13.0 +/- 5.5) N] and the fascia-fascia interface in control group [(13.6 +/- 4.0) N]. In the experimental group, the small vessels and the infiltration of inflammatory cells were observed in the porcine acellular dermal matrix patch after 5 weeks through histological observations. The junctions of the patch-fascia interface healed with fibrous connective tissue. At 6 months after surgery, the inflammation was subsided and the collagen fiber of the patch was reconstructed., Conclusion: The porcine acellular dermal matrix patch has good results in repairing full-thickness abdominal wall defect. The patch-fascia interface has similar breaking strength to the fascia-fascia interface. The collagen fibers of the patch are reconstructed.

Objective: To evaluate the cytotoxicity of microdoses peracetic acid (PAA) so as to provide the evidence for making residual limit of PAA sterilization., Methods: Mouse fibroblasts (L929 cell line) cultured in vitro were observed to evaluate the influence of microdoses PAA including 1 x 10(-6), 2 x 10(-6), 3 x 10(-6), 4 x 10(-6), 5 x 10(-6), and 10 x 10(-6) (V/V). The proliferation of cells was determined by MTT assay at 2, 4, and 7 days of culture. The growth curve and the relative growth rate (RGR) were obtained. The cytotoxicity of PAA at different concentrations was evaluated according to RGR., Results: At 2, 4, and 7 days after culture, fibroblasts of 1 x 10(-6) group grew with normal morphology analogous to control group, while the cell growth of other groups were poor. With the increase of PAA concentration, the absorbance (A) values decreased, which suggested that there was a significant negative correlation between cell proliferation and PAA concentration. And the correlation coefficient was -1.000 at 2 and 4 days, - 0.964 at 7 days. There was no significant difference in A value between 1 x 10(-6) group and the control group (P > 0.05), while there were significant differences in A value between the control group and other concentration groups (P < 0.05). The growth curve of 1 x 10(-6) group was similar to that of the control group, both had obvious phase of exponential growth. The growth curves of other groups had no obvious phase of exponential growth. The cytotoxicity of 1 x 10(-6) group was classified as level 1, 2 x 10(-6) group as level 2, 3 x 10(-6) group as level 3, 4 x 10(-6) group as level 3-4, 5 x 10(-6) group and 10 x 10(-6) group as level 4., Conclusion: PAA of 1 x 10(-6) had no obvious cytotoxicity. The residual limit of PAA less than 1 x 10(-6) was recommended.

Objective: To compare the effect of the composite skin graft consisting of split-thickness skin grafts (STSGs) and porcine acellular dermal matrix (PADM) with STSGs only, and to histologically observe the turnover of the PADM in rats., Methods: Twenty female Sprague-Dawley rats, weighing 200-225 g, were included. The size of 4.0 cm x 2.5 cm PADM was implanted into hypoderm of the left side of Sprague-Dawley rats' back. After 10-14 days, the size of 4.0 cm x 2.5 cm full-thickness skin defects were made on the left to expose the PADM under the skin and the same size of full-thickness skin defects were made on the right of the rats' back. The excised full-thickness skin was made to STSGs about 0.2 mm by drum dermatome. The defects were grafted with composite skin (STSGs on the PADM, experimental group) and STSGs only (control group). The survival rate, the construction degree of grafts, and the histological change in grafts area were observed at 2, 4, 8, and 20 weeks after operation., Results: At 2 weeks after STSGs (0.2 mm) placed on vascularized PADM, STSGs and PADM adhered together and the composite skin had a good survival. The control group also had a good survival. Histological observations showed that STSGs and PADM grew together, neutrophilic granulocytes and lymphocytes infiltrated in the PADM and some macrophages around the PADM. Fibrous connective tissues were filled under the STSGs in control group. At 4-8 weeks after transplantation, the composite skin had a good survival and the composite skin was thick, soft, and elastic. STSGs survived almost totally in control group, but the grafts were thin. Histological observations showed that inflammatory reactions of PADM faded gradually in experimental group; scar tissues formed under the STSGs in control group. At 20 weeks after transplantation, composite skin was flat, thick, and elastic in experimental group, but the STSGs were thinner and less elastic in control group. Histological observations showed that histological structures of the PADM were similar to the dermal matrix of rats, and the results showed that the collagen matrix of PADM was gradually replaced by the rats' collagen matrix. Scar tissues were filled under the STSGs in control group. Wound healing rates of experimental group were lower than those of control group at 4 and 8 weeks (P < 0.05); wound contraction rates of experimental group had lower tendency than those of control group, but showing no significant differences (P > 0.05)., Conclusion: Coverage wound with composite skin which composed of STSGs and PADM could improve wound healing quality; the composite skin is thicker and better elastic than STSGs only. The collagen matrix of PADM is gradually replaced by rats' collagen matrix.

Objective: To observe the changes of NYGGF4 gene expression during human preadipocyte differentiation and to explore the regulative role of tumor necrosis factor alpha (TNFalpha) on NYGGF4 gene expression in matured human adipocytes., Methods: Human preadipocytes-visceral (HPA-v) were cultured in vitro and differentiated into the matured adipocytes. Fully differentiated adipocytes were treated with TNFalpha in different concentrations for 16 hours or at 10 ng/mL for various times. Levels of the NYGGF4 mRNA were evaluated by real-time reverse transcription-PCR(RT-PCR)., Results: (1) After induction of differentiation, more than 90% of the HPAs-v exhibited typical adipocyte morphology on the 17th day. (2) In human preadipocytes, the level of NYGGF4 mRNA expression remained low. The NYGGF4 mRNA level was gradually increased with the preadipocytes being differentiated into the matured adipocytes, and reached the highest level in the fully differentiated adipocytes. (3) Treatment of the human matured adipocytes with TNFalpha resulted in a significant increase in the level of NYGGF4 mRNA. The up-regulatory effect of TNFalpha on the NYGGF4 gene expression tended to be enhanced with the increasing concentrations and elongation of time., Conclusion: During human preadipocytes differentiation, the level of NYGGF4 gene mRNA expression increases gradually. TNFalpha could upregulate the expression of NYGGF4 mRNA in human matured adipocytes. The regulatory effect of TNFalpha on the NYGGF4 gene expression is of dose-dependent and time-correlated.

Objective: To explore the feasibility of using PKH26 as a cell tracer to construct tissue engineered bone., Methods: BMSCs isolated from the bone marrow of 1-week-old New Zealand white rabbit were cultured. The BMSCs at passage 3 were labeled with PKH26 and were observed under fluorescence microscope. The percentage of the labeled cells was detected by Flow cytometer. The labeled cells were induced to differentiate into osteoblasts in vitro and the morphology of the cells after induction was observed under inverted phase contrast microscope. The osteogenic induction was evaluated by ALP staining and Alizarin red staining. The cells labeled with PKH26 were seeded on the bio-derived bone to construct tissue engineered bone in vitro. Then the compound of cells and material were observed under fluorescence microscope. The compound of labeled cells and material were implanted into the rabbit thigh muscle, and the transformation of the labeled cells was observed by fluorescence microscope 14 and 28 days later., Results: Fluorescence microscope observation: the BMSCs labeled by PKH26 were spherical and presented with red and uniform-distributed fluorescence, and the contour of the cells were clearly observed when they were adherent 24 hours after culture. Flow cytometric detection revealed that the percentage of labeled cells was 97.2%. After osteogenic induction, the morphology of the cells changed from long-fusiform to polygon-shape or cube-shape, more ECM was secreted, and the ALP and the Alizarin red staining were positive. At 48 hours after culturing the PKH26 labeled BMSCs with bio-derived bone, the fluorescence microscope observation showed that there was red fluorescence on the surface and inside of the material. At 14 days after implantation, the labeled cells with red and light fluorescence were evident in the implantation area; while at 28 days, the cells with red fluorescence were still evident but less in quantity and weaker in fluorescence strength., Conclusion: PKH26 can be used as BMSCs label for the construction of tissue engineered bone in vitro and the short-term tracing in vivo.

Objective: To explore the interventional effect of platelet lysate (PL) on osteogenic differentiation of BMSCs by induction in rats in vitro., Methods: Twenty-four clean-grade adult Wistar rats, weighing from 250 g to 300 g, male or female, were included in this study. PL was obtained through three times of centrifugation and repeated freeze-thaw for the blood aspirated from cardiac cavities in 16 Wistar rats. ELISA assay was conducted to detect the concentration of growth factors PDGF, TGF-beta1, IGF-1 and VEGF in PL. The BMSCs harvested by flushing femurs of 8 adult Wistar rats were isolated, cultivated and expanded in vitro. The cells at the 4 passage were performed for osteogenic differentiation by induction in three groups of A (5% PL of final concentration in basic induction medium), B (1% PL of final concentration in basic induction medium), and C (no presence of PL in basic induction medium as a control). The morphological changes of the cells were dynamically observed with inverted phase contrast microscope during the whole period. At different time-points, ALP staining (7 days) and ALP/TP (2, 8, 12 days) of the cells were detected to evaluate ALP activity, and the mineral formation in extracellular matrix was examined with Alizarin red staining which provided quantitative analysis of mineral deposits., Results: ELISA assay showed that the content of PDGF, TGF-beta1, IGF-1 and VEGF in PL reached (300 +/- 30), (140 +/- 25), (80 +/- 35), (70 +/- 20) pg/mL, respectively. Morphological observation displayed BMSCs in group A or B gradually turned from spindle-shape to square- or polygon-shape as the morphological type of osteoblast-like cells at 7 days. The cells in group A showed slower shape changes but higher proliferation than that in group B or C. Moreover, at the 20 days, the cells in group A still displayed dense growth and produced obviously decreased amount of mineral deposits in ECM when compared with group B or C. At the 7 days, the cells of group A showed smaller amount of granules positive for ALP staining in cytoplasm when compared with groups B and C, and displayed marked reduction in ALP activity assay at the 2, 8, and 10 days compared with that of groups B and C (P < 0.05). At the 20 days, Alizarin red staining showed the number of mineral deposits in groups A, B and C were 7.67 +/- 1.10, 12.87 +/- 0.81 and 15.59 +/- 0.25, respectively, while the area of mineral deposits were (161 778.70 +/- 44 550.80), (337 349.70 +/- 56 083.24), and (415 921.70 +/- 71 725.39) pixels, respectively. The number of mineral deposits and the area of mineral deposits in group A were smaller than those in groups B and C (P < 0.05). But there was no statistically significant difference between groups B and C (P > 0.05)., Conclusion: PL is a kind of system carrying various growth factors. Exposure of PL inhibits both ALP activity and mineral formation of BMCs in a dose-dependent way under the osteogenic induction environment.

Objective: To study and prepare a new kind of bone graft, which has osteogenesis, local anti-infective function and low immunogenicity., Methods: Gentamicin-impregnated bone was prepared by means of ultrasonic and vacuum, the release of gentamicin in vivo was measured by inhibition bacteria. Ten healthy male adult sheep were made animal infection models of thigh bone or humerus defect of 6 mm x 6 mm x 20 mm at size, and the defect was inoculated into 1 ml 5 x 10(10) CFU/ml Staphylococcus aureus. The animals were randomly divided into the experimental group (n=5, the bone graft with gentamicin was implanted) and the control group (n=5, the bone graft without gentamicin). Macroscopic, WBC count, radiological, and histological investigations were carried out to evaluate the anti-infective and osteosis capability., Results: The concentrations of gentamicin were 46.1 microg/ml in bone allograft and 17.3 microg/ml in muscles after 1 day. The concentrations of gentamicin exceeding the minimum inhibitory concentration lasted for 14 days in vivo. WBC in the control group was higher than that in the experimental group. In the control group, 1 case died owing to septicemia 3 weeks after operation. The implanted bones were wrapped in pus 4 and 6 weeks, and the defects were filled with fibre tissue 8 and 10 weeks after operation. In the experimental group, 1 case was infected, the others had a good concrescence. The bone allografts began to integrate with adjacent bone after 4-8 weeks and integrate well after 12 weeks. The X-ray and histological observation showed that new bone formed and took the place of bone allograft., Conclusion: The gentamicin-impregnated bone allograft was of a good sustained release feature in vivo, local anti-infection and osteogenesis. It might be an ideal bone grafting material for bone defects with infection.