[法国《防务宇航》2019年11月28日报道]    11月27日，德国总理安格拉?默克尔在国会发表讲话称，鉴于非洲部分地区局势，敦促部分国会议员重新考虑目前德国限制性武器出口政策，扩大向非洲地区武器出口规模，以维护德国自身国家利益。 她指出，俄罗斯近期与非洲国家在索契举行了首脑峰会，期间还举行了大型防务展，并且承诺向非洲国家采购俄制装备提供优惠价格。此外，她还指出，德国和法国已经同意启动于2018年七国峰会中签署的“萨赫勒安全倡议”（Sahel security initiative），以尽快稳定该地区的安全局势。（北方科技信息研究所 王睿） .

Imaging of gene expression in live cells or tissues has largely relied on light-based strategies detecting fluorescence or luminescence, but poor transmission of light through tissues limits the depth that can be imaged. A new study reports a synthetic biology approach to encode an ultrasound-based gene expression reporter that is applicable to mammalian cells in vitro and in vivo. Credit: Chnit Siri Kan Ti N Cheiynghim/EyeEm/Getty To adopt ultrasound as a robust biomolecular readout, strategie...

Imaging of gene expression in live cells or tissues has largely relied on light-based strategies detecting fluorescence or luminescence, but poor transmission of light through tissues limits the depth that can be imaged. A new study reports a synthetic biology approach to encode an ultrasound-based gene expression reporter that is applicable to mammalian cells in vitro and in vivo. Credit: Chnit Siri Kan Ti N Cheiynghim/EyeEm/Getty To adopt ultrasound as a robust biomolecular readout, strategie...

Abstract.Optical coherence tomography (OCT) and high-frequency ultrasound (HFUS), two established imaging modalities in the field of dermatology, were evaluated and compared regarding their applicability for visualization of skin tissue morphology and quantification of murine intradermal structures. The accuracy and reproducibility of both methods were assessed ex vivo and in vivo using a standardized model for intradermal volumes based on injected soft tissue fillers. OCT revealed greater deta...

Abstract.Optical coherence tomography (OCT) and high-frequency ultrasound (HFUS), two established imaging modalities in the field of dermatology, were evaluated and compared regarding their applicability for visualization of skin tissue morphology and quantification of murine intradermal structures. The accuracy and reproducibility of both methods were assessed ex vivo and in vivo using a standardized model for intradermal volumes based on injected soft tissue fillers. OCT revealed greater deta...