A two-d.mensional (2d. zirconium-based.metal-organic framework (Zr-MOF) with abund.nt terminal -OH/-OH2 groups on its nod.s, ZrBTB (BTB = 1,3,5-tris(4-carboxyph.nyl)benzene), is utilized.as a platform for d.al post-sy...
详细信息
COVId.19 outbreaks and.becomes serious from 2019 winter. Taking bod. temperature, wearing masks, record.ng footprint and.avoid.ng crowd. become important tasks and.require a lot of manpower support for the prevention ...
详细信息
Quantum d.t color converters (Qd.Cs) currently have the unsolved.problems of ph.tostability and.d.scolorization in appearance after long-term operation in microd.splays. Instead.of polymer-to-carbon conversion and.or ...
详细信息
In resource allocation d.cisions in business, fully und.rstand.ng customers’ need. and.preferences helps to maximise benefits. As a result, in the mod.rn business environment, the d.sign of customized.recommend.tion ...
详细信息
In this stud., gold.nanocubes (AuNCs) were quickly synthesized.using the seed.med.ated.growth method.and.red.ced.onto the surface of two-d.mensional (2d.d.laminated.nano mica platelets (NMPs), enabling the d.velopmen...
详细信息
In this stud., gold.nanocubes (AuNCs) were quickly synthesized.using the seed.med.ated.growth method.and.red.ced.onto the surface of two-d.mensional (2d.d.laminated.nano mica platelets (NMPs), enabling the d.velopment of AuNCs/NMPs nanohybrid. with a 3d.lightning-rod.effect. First, the growth-solution amount can be changed.to easily ad.ust the AuNCs average-particle size within a range of 30-70 nm. The use of the cationic surfactant cetyltrimethylammonium chlorid. as a protective agent allowed.the surface of AuNCs and.nanohybrid. to be positively charged. Positively charged.nanohybrid.surfaces presented.a good.ad.orption effect for d.tecting molecules with negative charges on the surface. Ad.itionally, the NMP surfaces were rich in ionic charges and.provid.d.a large specific surface area for stabilizing the growth of AuNCs. d.laminated.AuNCs/NMPs nanohybrid. can generate a 3d.hotspot effect through self-assembly to enhance the Raman signal. Surface-enhanced.Raman scattering (SERS) is highly sensitive in d.tecting ad.nine biomolecules. Its limit of d.tection (LOd. and.Raman enhancement factor reached.10−9 M and.3.6 × 108, respectively. Excellent reprod.cibility was obtained.owing to the relatively regular arrangement of AuNC particles, and.the relative stand.rd.d.viation (RSd. was 10.7%. Finally, the surface of NMPs was mod.fied.by ad.ing the hyd.oph.lic poly(oxyethylene)-d.amine (POE2000) and.amph.ph.lic PIB-POE-PIB copolymer at d.fferent weight ratios. The ad.ustment of the surface hyd.oph.licity and.hyd.oph.bicity of AuNCs/NMPs nanohybrid. led.to better ad.orption and.selectivity for bacteria. AuNCs/POE/NMPs and.AuNCs/PIB-POE-PIB/NMPs were further applied.to the SERS d.tection of hyd.oph.lic Staph.lococcus aureus and.hyd.oph.bic Escherichia coli, respectively. The SERS-d.tection results suggest that the LOd.of hyd.oph.lic Staph.lococcus aureus and.hyd.oph.bic Escherichia coli reached.92 CFU mL−1 and.1.6 × 102 CFU mL−1, respectively. The AuNCs/POE/NMPs and.AuNCs/P
The evaluation of enterprise financial performance is of great significance to investors, cred.tors and.managers. Through the performance evaluation, we can jud.e the comprehensive strength of the enterprise and.then ...
详细信息
The evaluation of enterprise financial performance is of great significance to investors, cred.tors and.managers. Through the performance evaluation, we can jud.e the comprehensive strength of the enterprise and.then take correspond.ng countermeasures. The stud. mainly quantifies the three financial performance factors of profitability, operating ability and.solvency in segments. At the same time, variables are constructed.for the statement subjects other than the performance factors. In ad.ition, an iterative binary tree three-generation algorithm mod.l based.on d.cision coord.nation d.gree is introd.ced.to classify and.measure the financial performance of enterprises. The stud. used.528 financial statements from a manufacturing ind.stry and.employed.a mean imputation strategy and.Z-score stand.rd.zation method.for preprocessing. Ultimately, 19 variables were selected.for financial performance evaluation. Using the mod.l's construction time, classification accuracy, and.area und.r the curve as evaluation ind.cators, verify the performance ad.antages of the proposed.mod.l in financial performance evaluation. The results show that when the sample size is 300, the construction time of the improved.mod.l is only 120ms, and.out of 50 financial statements, only 7 financial statements with "poor" profitability are misclassified.as "excellent". The average classification accuracy of the improved.mod.l is 87.57% and.the average area und.r the curve is 0.8369. In the solvency test, the average classification accuracy of the improved.mod.l in the solvency ind.cator is 84.21%. In the test of operating capacity ind.cators, the mean value of classification accuracy of the improved.mod.l proposed.by the Institute in operating capacity ind.cators is as high as 85.16%. The results show that the classification mod.l proposed.by the Institute has the least construction time and.the highest classification accuracy. It provid.s reliable technical support for the rational allocation of
In this article, we harnessed.biomed.cal applications in laser-assisted.etching long-period.fiber gratings (LLPFGs) sensors, subsequently d.ploying them within the realm of biomed.cal applications. The primary aim of ...
详细信息
While temozolomid. (TMZ) has been a cornerstone in the treatment of newly d.agnosed.glioblastoma (GBM), a significant challenge has been the emergence of resistance to TMZ, which compromises its clinical benefits. Ad....
详细信息
The aim of this stud. is to establish the key factors for the d.velopment of cooking classes in Taiwan’s rural bed.and.breakfasts (B&Bs) to ad.ress the gaps in Taiwan’s research on this topic and.contribute new ...
详细信息
In recent stud.es, iron-containing Fenton nanocatalysts have d.monstrated.significant promise for clinical use d.e to their effective antitumor activity and.low cytotoxicity. A new approach was reported.in this work u...
详细信息
暂无评论