当前查询到8条专利与查询词 "Zhang Zhemin"相关,搜索用时0.3437512秒!排序方式:
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申请号:201911129505.7 公开号:CN110879985A 主分类号:G06K9/00
申请人:【中文】西南交通大学【EN】SOUTHWEST JIAOTONG University 申请日:2019.11.18 公开日:2020.03.13
摘要:【中文】本发明公开了一种抗噪声数据的人脸识别模型训练方法,包括如下步骤:S1、构建人脸识别数据集,按照个体ID进行分类;S2、对步骤S1所获得的数据集进行预处理;S3、根据步骤S2的预处理结果,构建20层的ResNet网络结构提取特征,使用ArcFace损失函数训练人脸识别模型;S4、统计最近一定数量Batch中cosθ值的分布情况,以cosθ值为横坐标,同一个cosθ的数量为纵坐标,绘制曲线图P;S5、重复步骤S4,直到cosθ分布呈现两个高斯分布,分别计算两个高斯分布顶点横坐标α、β和交点横坐标λ;S6、根据α、β值的大小,判断模型拟合情况,动态调整损失函数。本发明能够自动过滤噪声数据扰,提高模型训练效果。 【EN】The invention discloses a training method of a face recognition model of anti-noise data, which comprises the following steps of S1, constructing a face recognition data set, classifying according to individual IDs, S2, preprocessing the data set obtained in the step S1, S3, constructing a 20-layer ResNet network structure according to a preprocessing result of the step S2, extracting features, training the face recognition model by using an ArcFace loss function, S4, counting the distribution situation of cos theta values in a certain number of recent Batch, drawing a curve graph P by using the cos theta values as horizontal coordinates and the same cos theta values as vertical coordinates, S5, repeating the step S4 until the cos theta values show two Gaussian distributions, respectively calculating the horizontal coordinates α, β of the two Gaussian distribution vertexes and the horizontal coordinate lambda of an intersection point, S6, dynamically adjusting the loss function according to the sizes of the α and β values, and automatically filtering the loss data disturbance and improving the training effect of the model.
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申请号:201911050011.X 公开号:CN110938616A 主分类号:C12N9/88
申请人:【中文】江南大学【EN】Jiangnan University 申请日:2019.10.31 公开日:2020.03.31
摘要:【中文】本发明公开了一种温泉热碱芽孢杆菌来源的腈水合酶的突变体,属于酶工程技术领域。本发明提供的腈水合酶突变体Cal.t Nhase‑A20V在70℃的半衰期大约是10min,相比野生酶热稳定性并未有太大变化,突变体Cal.t Nhase‑A20V的比酶活是野生酶的128%。同时该突变体也具备了更好的底物耐受性和产物耐受性,全细胞催化生成烟酰胺最终产量达到598g/L;因此,本发明提供的腈水合酶突变体Cal.t Nhase‑A20V,具有很好的酶学性质,有利于以后的工业生产。 【EN】The invention discloses a mutant of nitrile hydratase derived from thermokalite bacillus spa, belonging to the technical field of enzyme engineering. The half-life period of the nitrile hydratase mutant Cal.t Nhase-A20V provided by the invention at 70 ℃ is about 10min, the heat stability of the nitrile hydratase mutant Cal.t Nhase-A20V is not changed greatly compared with that of a wild enzyme, and the specific enzyme activity of the nitrile hydratase mutant Cal.t Nhase-A20V is 128% of that of the wild enzyme. Meanwhile, the mutant has better substrate tolerance and product tolerance, and the final yield of nicotinamide generated by whole-cell catalysis reaches 598 g/L; therefore, the nitrile hydratase mutant Cal.t Nhase-A20V provided by the invention has good enzymological properties and is beneficial to subsequent industrial production.
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申请号:201811160619.3 公开号:CN110961060A 主分类号:B01J19/00
摘要:【中文】本公开涉及一种微通道反应器,包括:壳体,具有进料口、出料口、冷却流体进口和冷却流体出口,微通道反应单元,位于壳体内部,微通道反应单元包括微通道反应器壁,微通道反应器壁包括:不锈钢基底层,具有形成反应通道的第一侧面;粗糙加工层,加工在第一侧面上;以及催化剂载体层,形成在粗糙加工层上,进料口和出料口通过反应通道连通,壳体内还具有沿微通道反应单元设置的冷却通道,冷却流体进口和冷却流体出口通过冷却通道连通。这样,催化剂载体层通过加工到不锈钢基底层上的粗糙加工层附着,粗糙加工层通过粗糙面能够有效提升催化剂载体层的附着面积,同时提高催化剂载体层和不锈钢基底层之间的附着力,有利于反应顺利进行。 【EN】The present disclosure relates to a microchannel reactor, comprising: the shell has feed inlet, discharge gate, cooling fluid import and cooling fluid export, and microchannel reaction unit is located inside the shell, and microchannel reaction unit includes microchannel reactor wall, and microchannel reactor wall includes: a stainless steel base layer having a first side forming a reaction channel; a rough processing layer processed on the first side surface; and the catalyst carrier layer is formed on the rough processing layer, the feed inlet is communicated with the discharge outlet through a reaction channel, a cooling channel arranged along the microchannel reaction unit is also arranged in the shell, and the cooling fluid inlet is communicated with the cooling fluid outlet through the cooling channel. Like this, the catalyst carrier layer is adhered to through the rough machining layer of processing on the stainless steel base layer, and the rough machining layer can effectively promote the area of adhering to of catalyst carrier layer through the rough surface, improves the adhesive force between catalyst carrier layer and the stainless steel base layer simultaneously, is favorable to the reaction to go on smoothly.
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申请号:201811160636.7 公开号:CN110961096A 主分类号:B01J23/46
摘要:【中文】本发明涉及一种费托合成催化剂及其制备方法和应用,该方法包括:在催化载体的表面负载活性金属组分;其中,所述催化载体的圆度值范围E被设置为0.15‑0.95。本发明提供的费托合成催化剂在进行费托合成反应时,具有高CO转化率、C5+烃类选择性和低甲烷选择性。 【EN】The invention relates to a Fischer-Tropsch synthesis catalyst and a preparation method and application thereof, wherein the method comprises the following steps: loading an active metal component on the surface of a catalytic carrier; wherein the roundness value range E of the catalytic carrier is set to 0.15 to 0.95. The Fischer-Tropsch synthesis catalyst provided by the invention has high CO conversion rate, C5+ hydrocarbon selectivity and low methane selectivity when being used for carrying out Fischer-Tropsch synthesis reaction.
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申请号:201911408368.0 公开号:CN111043651A 主分类号:F24D19/10
摘要:【中文】本发明涉及一种应用于地热水采集及回灌的自动回扬转置系统,本发明在地热井与入户端之间依次设置了双向除砂罐装置、入户温控加热板换装置,通过双向除砂罐装置用于地热水除砂,一方面对回灌入地下的地热尾水进行处理,增加回灌井的使用年限,减少长期回灌时回灌井长期堵塞的问题,另一方面对进入入户温控加热板换装置的地热水进行初步处理,进而增加装置使用寿命,降低地热供暖所需维护费。通过激荡杂质回扬系统装置对地热井进行排污,不但可以增加回扬清理杂质的效率,而且能增加地热井使用年限,减少回灌井清理费用,这对于保证回灌工艺的顺利进行,降低地热供暖所需维护费具有重要意义,在很大程度上有利于促进地热供暖的规模化推广。 【EN】The invention relates to an automatic pumping and transposition system applied to geothermal water collection and recharge, which is characterized in that a bidirectional sand removal tank device and a home-entering temperature control heating plate device are sequentially arranged between a geothermal well and a home-entering end, the bidirectional sand removal tank device is used for removing sand from geothermal water, on one hand, geothermal tail water which is recharged into the ground is treated, the service life of the recharge well is prolonged, the problem of long-term blockage of the recharge well during long-term recharge is solved, on the other hand, geothermal water entering the home-entering temperature control heating plate device is primarily treated, the service life of the device is prolonged, and the maintenance cost required by geothermal heating is reduced. Through surging impurity system device of raising back and carrying out the blowdown to the geothermal well, not only can increase the efficiency of raising back clearance impurity, can increase geothermal well life in addition, reduce recharge well clearance expense, this is to guaranteeing going on smoothly of recharge technology, reduces the required maintenance cost of geothermal heating and has the significance, is favorable to promoting geothermal heating's scale at to a great extent and promotes.
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申请号:201911296656.1 公开号:CN111080275A 主分类号:G06Q20/08
摘要:【中文】本申请实施例公开了一种跨区域资源转移方法、装置、设备及存储介质,属于互联网技术领域。方法包括:通过第三方应用生成订单信息,订单信息包括第一数量,第一数量为待转移的第一类型资源的数量;扫描第二终端基于目标应用展示的图形码,图形码包含登录目标应用的用户标识;向第一服务器发送资源转移请求,由第一服务器向用户标识的资源账户所属的第二服务器发送跨区域资源转移请求,跨区域资源转移请求携带用户标识和订单信息,由第二服务器将资源账户中第二数量的第二类型资源转移给第一目标账户,第二数量的第二类型资源与第一数量的第一类型资源等值。无需每个服务提供者均部署相应的应用服务器来与第二服务器进行交互,节约了成本。 【EN】The embodiment of the application discloses a cross-regional resource transfer method, a device, equipment and a storage medium, and belongs to the technical field of internet. The method comprises the following steps: generating order information through a third-party application, wherein the order information comprises a first quantity, and the first quantity is the quantity of a first type of resource to be transferred; scanning a graphic code displayed by the second terminal based on the target application, wherein the graphic code comprises a user identifier for logging in the target application; sending a resource transfer request to a first server, sending a cross-region resource transfer request to a second server to which a resource account of the user identifier belongs by the first server, wherein the cross-region resource transfer request carries the user identifier and order information, transferring a second quantity of second type resources in the resource account to a first target account by the second server, and the second quantity of second type resources are equivalent to the first quantity of first type resources. And each service provider is not required to deploy a corresponding application server to interact with the second server, so that the cost is saved.
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