幫忙翻譯 化工文獻 在線等 拒絕使用自動翻譯
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Nano-sized Beta zeolites, with a crystal size of 80–100 nm, were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acet... Nano-sized Beta zeolites, with a crystal size of 80–100 nm, were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acetic anhydride than theconventional zeolites of largeparticle size.The smallcrystalsize of nano-sized zeolitesmay bringon more accessible activesites and then enhance the catalytic activity. The exposed pore openings in nano-sized zeolites allow a fast desorption of heavy products from the catalyst and can then reduce the occupancy of active sites by the adsorption of products ,this can then alleviate the catalyst deactivation and improve the catalyst stability deactivation and improve the catalyst stability. 急用 在線等 拒絕用自動翻譯 因為這個誰都會 如果有超級好用的自動在線翻譯或軟件也可以推薦 展開
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- 婉約的燈籠* 2009-06-11 00:00:00
- 納米沸石測試,以晶粒尺寸80-100納米,是合成表面濕法。在納米H測試沸石展覽更高活性和穩(wěn)定性的傅克?;郊酌押图妆脚c比傳統(tǒng)的分子篩大顆粒大小的小晶粒尺寸納米沸石可能帶來更多的方便作用然后提高催化活性。外露孔開口納米沸石允許快速解吸重型產(chǎn)品的催化劑,可以減少占用的活性ZX的吸附產(chǎn)品,這可以減輕催化劑失活,提高了催化劑的失活與穩(wěn)定提高催化劑的穩(wěn)定性 Beta=beta Hbeta=H beta theconventional=the conventional largeparticle=large particle smallcrystalsize=small cr y stal size zeolitesmay=zeolites may bringon=bring on
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- 成年鴕鳥 2009-06-03 00:00:00
- 納米等級的Beta沸石,晶粒尺寸80-100納米,經(jīng)由表面濕法合成。納米等級的H Beta沸石比起傳統(tǒng)大顆粒的沸石應用在苯甲醚和甲苯與的Friedel–Crafts ?;磻懈拥挠谢钚耘c穩(wěn)定性.小晶粒尺寸的納米等級沸石具有令人贊賞的活性用以增強催化能力。納米沸石外露的孔開口對于較重產(chǎn)物從催化劑的解離增快 同時也可以減少活性作用部位被產(chǎn)物占據(jù) 這樣可以緩和催化劑的不活化 改進催化劑的穩(wěn)定失活以及穩(wěn)定性
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- 我會乖乖的 2009-06-02 00:00:00
- 納米沸石的Beta版,以晶粒尺寸80-100納米,是合成表面濕法。該納米Hbeta沸石展覽更高的活性和穩(wěn)定性的傅克酰化苯甲醚和甲苯與比theconventional沸石的largeparticle大小。 該smallcrystalsize納米zeolitesmay bringon更容易activesites然后提高催化活性。外露孔開口納米沸石允許快速解吸重型產(chǎn)品的催化劑,可以減少占用的活性ZX的吸附產(chǎn)品,這可以減輕催化劑失活,提高了催化劑的失活與穩(wěn)定提高催化劑的穩(wěn)定性。 自己翻的,希望有用。。。。。。。。
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- DMN12369 2009-06-01 00:00:00
- 納米沸石的SY版,以晶粒尺寸80-100納米,是合成表面濕法。該納米SY版沸石展覽更高的活性和穩(wěn)定性的傅克?;郊酌押图妆脚c比傳統(tǒng)的分子篩的大顆粒大.小晶粒尺寸的納米在網(wǎng)站更容易獲得有用的,然后提高催化活性。外露孔開口納米沸石允許快速解吸重型產(chǎn)品的催化劑,可以減少占用的活性ZX的吸附產(chǎn)品,這可以減輕催化劑失活,提高了催化劑的失活與穩(wěn)定提高催化劑的穩(wěn)定性。
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- 幫忙翻譯 化工文獻 在線等 拒絕使用自動翻譯
- Nano-sized Beta zeolites, with a crystal size of 80–100 nm, were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acet... Nano-sized Beta zeolites, with a crystal size of 80–100 nm, were synthesized via surface wet method. The nano-sized Hbeta zeolites exhibit much higher activity and stability in the Friedel–Crafts acylation of anisole and toluene with acetic anhydride than theconventional zeolites of largeparticle size.The smallcrystalsize of nano-sized zeolitesmay bringon more accessible activesites and then enhance the catalytic activity. The exposed pore openings in nano-sized zeolites allow a fast desorption of heavy products from the catalyst and can then reduce the occupancy of active sites by the adsorption of products ,this can then alleviate the catalyst deactivation and improve the catalyst stability deactivation and improve the catalyst stability. 急用 在線等 拒絕用自動翻譯 因為這個誰都會 如果有超級好用的自動在線翻譯或軟件也可以推薦 展開
- 幫忙翻譯下化工的英語。。用在線詞典翻譯部正確
- A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase, in which the... A reversed-phase ion-pairing high-performance liquid chromatography (RP-HPIPC) method for the separation of a complex mixture of heparin-derived oligosacchrides has been developed by a stepwise optimization of the mobile phase, in which the concentration of ion-pairing reagent, mobile phase pH, and acetonitrile concentration were varied. The resolution of more than 30 oligosaccharide components was obtained, under optimized conditions, in an analysis time of less than 30 min. This represents the first RP-HPLC method that can separate a complex mixture of both small and large sulfated oligosaccharides in a single chromatographic step. The heparin-derived oligosaccharides, in this mixture, can also be separated under a second set of RP-HPIPC conditions using a volatile ion-pairing reagent, tributylammonium acetate, to aid in the recovery of individual sulfated oligosaccharides. Moreover, it was possible to replace sodium chloride gradient, required for eluting highly sulfated oligosaccharides, with a fixed, low concentration of a volatile salt, ammonium acetate, by utilizing an acetonitrile gradient. This solvent system might make it possible to directly interface this RP-HPIPC separation with mass spectral analysis. ??2003 Elsevier B.V. All rights reserved. Keywords: Ion-pairing reagents; Gradient elution; Oligosaccharides 展開
- 成績單翻譯 在線等
- 生物工藝實驗1《分子生物學》課程論文《生物工藝學》教學實習基因工程原理生物工藝學1《微生物遺傳學》課程論文生物工程綜合教學實習生物工藝實驗2生物反應器生物工藝學2生物工程綜合... 生物工藝實驗1 《分子生物學》課程論文 《生物工藝學》教學實習 基因工程原理 生物工藝學1 《微生物遺傳學》課程論文 生物工程綜合教學實習 生物工藝實驗2 生物反應器 生物工藝學2 生物工程綜合專業(yè)實踐 《生物反應器》課程設計 生物工程實習模塊2 展開
- 文獻求翻譯
- Since the formation of a titanacyclopropane en route to cyclopropylamines can only occur with alkylmagnesium halides that contain a b-hydrogen atom, Grignard reagents without b-hydrogens appeared to be the most promising reagents for th... Since the formation of a titanacyclopropane en route to cyclopropylamines can only occur with alkylmagnesium halides that contain a b-hydrogen atom, Grignard reagents without b-hydrogens appeared to be the most promising reagents for the synthesis of primary tert-alkylamines from nitriles (Scheme 1). Thus propionitrile (1a), phenylmagnesium bromide (2) and Ti(Oi-Pr)4 were chosen to optimize the reaction conditions. In the protocol for the synthesis of cyclopropylamines,10 Ti(Oi-Pr)4 is already present in the diethyl ether solution of a nitrile, before two equivalents of the Grignard reagent are added. As this did not appear to be optimal for the synthesis of primary tertalkylamines, the Grignard reagent was added before Ti(Oi-Pr)4. With 2 equivalents of PhMgBr, 0.1 equivalent of Ti(Oi-Pr)4, and 1 equivalent of propionitrile (1a), the primary tert-alkylamine 8a was not formed at all. With an equimolar quantity of Ti(Oi-Pr)4, the amine 8a was produced in a low yield (11%) but with 1 equivalent of Ti(Oi- Pr)4 and 3 equivalents of the Grignard reagent 2, a 60% yield of 8a was obtained. Monitoring of the reaction by workup of aliquots of the reaction mixture showed that the first addition of 2 to form the N-magnesio derivative of the corresponding imine was rapid, whereas the subsequent second addition of the Grignard reagent 2 required heating under reflux for up to 24 hours. In tetrahydrofuran instead of diethyl ether, the amine 8a was formed in a very low yield, if at all. 展開
- 求翻譯文獻
- Anionsarecommonlyfoundintheenvironmentandbiologicalsystems.Forinstance,fluorideiswidelyusedindentalcareapplicationsandexhibitsinhibitionofcertainenzymefunctions.1Inadditi... Anions are commonly found in the environment and biological systems. For instance, fluoride is widely used in dental care applications and exhibits inhibition of certain enzyme functions.1 In addition to playing a central role in biological regulation, chloride is also a major groundwater contaminant that can corrode steel and concrete.2 Thyroid hormone synthesis largely determines iodine content.3 Acetate is a possible tracer for malignancies and has been extensively investigated in prostate cancer and its metastases.4 Phosphate ion is biologically and environmentally significant.5 Cyanide exerts adverse effects on human health as well as environment at low concentrations. Determining anions concentration is thus of primary concern in many areas, including food processing, industry, and clinic analysis.6 However, hydrophilic anions, such as F- and Cl-, form strong hydrogen bonds with protic solvents. Therefore, developing fluorescent probes based on electrostatic interactions for anions functioning in polar protic solvents is both challenging and currently infeasible. 展開
- 幫忙翻譯
- AttachingtheSampleChuckYouwillneeda#2Phillipsscrewdriverforthisstep.FollowingthedetailsshowninFig.2-4,installthesamplechuckbyfirstaligningthepinsonthebottomofthesamplechu... Attaching the Sample Chuck You will need a #2 Phillips screwdriver for this step. Following the details shown in Fig. 2-4, install the sample chuck by first aligning the pins on the bottom of the sample chuck with the receptacles on the alpha- SE base. Then tighten the upper two captive thumb screws. Next, use the Phillips screwdriver to tighten the lower two captive screws. Don’t over tighten the screws! It will make it difficult to remove them in the future; just ensure that the screws are snug. Finally, connect the vacuum line from the sample chuck to the vacuum fitting on the alpha-SE base. Releasing the Z-stage Shipping Lock To access the Z-stage shipping lock, first loosen the captive screw on the lamp/shipping lock access door, then open the access door by rotating 180°, as shown in Fig. 2-5. To release the Z-stage shipping lock, stand in front of the ellipsometer and use your left hand to balance the weight of the Z-stage (you will feel it lift up slightly). It will be difficult to release the shipping lock if you apply too much or not enough upward force. Next, use your right hand to move the shipping lock to the operating position (to the right, see Fig. 2-6). If the lock is hard to move, you can use a tool to gain more leverage. The shipping lock will move about 1/3” [8mm] to the right. Checking the Lamp Check that the QTH lamp in fully seated in the lamp housing. The lamp is located behind the actuator screw (see Fig. 2-6) and has two white wires protruding from the back of the lamp. Simply push down on the lamp ensuring that the lamp is fully seated in the lamp housing. Rotate the lamp/shipping lock access door to the closed position and hand tighten the captive screw. 拒絕翻譯軟件,翻譯軟件我自己也會用 不是用翻譯軟件我就看不懂,只是,上來找人翻譯就是希望翻譯出比較容易看懂,不需要自己對照就可以看的說明書,如果用翻譯軟件,根本就詞不達意,還是要自己對著原文件核實 既然用了那么多積分,就希望有相當?shù)某晒?,如果用翻譯軟件混積分,那就是人品問題了 還有,某些人不要不懂亂說混積分 展開
- 幫忙翻譯一下化工方面的單詞 英語
- 堿值測定器試劑移液管錐形瓶酸式滴定管甲基黃溴甲酚綠混合指示劑鹽酸標準溶液摩爾/升酸式滴定管... 堿值 測定器 試劑 移液管 錐形瓶 酸式滴定管 甲基黃溴甲酚綠混合指示劑 鹽酸標準溶液 摩爾/升 酸式滴定管 展開
- 急求英語達人幫忙翻譯段文章,在線等謝謝
- The incorporation of silicon from the quartz-made growth chamber, characteristic of NIRIM-type reactor is insignificant in our samples, if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here), wh... The incorporation of silicon from the quartz-made growth chamber, characteristic of NIRIM-type reactor is insignificant in our samples, if any. The peak at 1.681 eV from the Si–V defect is totally absent from our films (not shown here), which supports the good quality of these films. The improvement of the crystalline quality of {111} films is explained by the weak ion bombardment of the sample during its growth outside the plasma ball. Raman measurements (not shown in this work) have also confirmed the high crystalline quality of our films, in particular in the low doping range. Very high boron concentrations (up to 5×1021 cm?3) have been reached at this growth position, outside the plasma ball. 展開
- 翻譯段文獻麻煩
- Eventhoughfluorescentprobesforcopperionhavebeenextensivelyexploredowingtobiologicalsignificanceofthismetalion,4therearestillonlyafewexamplesof“off-on”typesensorsavailab... Even though fluorescent probes for copper ion have been extensively explored owing to biological significance of this metal ion,4 there are still only a few examples of “off-on” type sensors available in aqueous systems.5 Furthermore, only a few ratiometric fluorescent probes for Cu2+ have been found in the literature due the fluorescence quenching nature of paramagnetic Cu2+,6 and most of them were working only in pure organic solvents. Ratiometric fluorescent measurements observe changes in the ratio of the intensities of the emission at two wavelengths. Thus, ratiometric fluorescent sensors have an important feature that they can be used to evaluate the analyte concentration and provide built-in correction for environmental effects. On the other hand, rhodamine derivatives are nonfluorescent and colorless, whereas ring-opening of the corresponding spirolactam gives rise to strong fluorescence emission and a pink color. Recently, a spirolactam (nonfluorescent) to ringopened amide (fluorescent) process was utilized for the detection of metal ions.5a,b,d,e,7 We introduced rhodamine fluorophore onto the pyrene moiety, which was utilized as a selective fluorescent and colorimetric sensor for Cu2+ in aqueous solution. Among the various metal ions, the chemosensor PRC displayed highly selective ratiometric changes upon the addition of Cu2+. As expected, the pyrene moiety served successfully as a source of these ratiometric changes. As far as we are aware, PRC is the first ratiometric sensor based on rhodamine derivative. For comparison, pyrene-based compound P4 was synthesized to test the fluorescence change with Cu2+. 展開
- 求翻譯英文文獻
- 2.2. Material Characterizations. A field emission scanning electron microscope (SEM, JEOL 6701F) was used to investigate the morphologies, particle sizes of the samples. Transmission electron microscopy and elemental compositions of the ... 2.2. Material Characterizations. A field emission scanning electron microscope (SEM, JEOL 6701F) was used to investigate the morphologies, particle sizes of the samples. Transmission electron microscopy and elemental compositions of the samples were determined by JEM-2100F (JEOL) coupled with an energy-dispersive X-ray spectroscopy (EDX, Phoenix) system. Wide-angle and low-angle X-ray powder diffraction (XRD) of the as-obtained samples were recorded on a Rigaku D/max-2500 with Cu Kα radiation (λ = 1.540 56 ?) operated at 40 kV and 200 mA. Raman measurements were performed using a DXR from Thermo Scientific with a laser wavelength of 532 nm. To calculate the pore size distribution and pore volumes, the nitrogen absorption and desorption isotherms were measured at 77.3 K with an Autosorb-1 specific surface area analyzer from Quantachrome. The content of N in N-doped porous carbon was determined by NHC elemental analysis using Flash EA 1112. Thermogravimetric (TG) analysis of S/C composite was performed on TG/DTA 6300 in an N2 flow to obtain the S content in the composite. A four-contact method was applied to measure the powder electronic conductivity of porous carbons. The powder sample was pressed to disk at 4 MPa with two stainless-steel plungers, whose resistance was measured by a Keithley 2400 digital multimeter in fourwire mode. The conductivity of the sample was calculated according to the resistance and the size of the disk. Information of the surface elements was obtained by X-ray photoelectron spectroscopy (XPS) performed on the Thermo Scientific ESCALab 250Xi using 200 W monochromatic Al Kα radiation. The 500 μm X-ray spot was used for XPS analysis. The base pressure in the analysis chamber was about 3 × 10?10 mbar. All reported data of XPS binding energy are calibrated based on the hydrocarbon C 1s line at 284.8 eV from adventitious carbon. Spectra were fitted with Lorentzian?Gaussian functions and smart background using Thermo Avantage software. 展開
- 求助,英文文獻翻譯!
- 2. Experimental 2.1 Materials Nano-CaCO3 particles (D50: 30?70 nm by TEM (Fig. 1) and BET: ca.17m2·g-1) were supplied by Shanghai Zhuoyue Nanotech Corporation. Methyl methacrylate (MMA, Shanghai Lingfeng Chemicals) was purified ... 2. Experimental 2.1 Materials Nano-CaCO3 particles (D50: 30?70 nm by TEM (Fig. 1) and BET: ca.17m2·g-1) were supplied by Shanghai Zhuoyue Nanotech Corporation. Methyl methacrylate (MMA, Shanghai Lingfeng Chemicals) was purified by distillation under reduced pressure; potassium persulphate (K2S2O8, initiator, Shanghai Lingfeng Chemicals) was of chemical grade. Silane coupling agent A174 (γ-methacryloxypropyltrimethoxysilane) was purchased from Shanghai Yaohua Factory. Polyvinylchloride (PVC, WS-1000S) was supplied by Shanghai Chlor-Alkali Chemical Co., Ltd. Fig. 1 Morphology of untreated CaCO3 nanoparticles. Fig. 2 Morphology of PMMA-coated CaCO3 nanoparticles. 2.2 PMMA emulsion polymerization on CaCO3 nanoparticles 2.2.1 Surface silanation of nano-CaCO3 particles The nano-CaCO3 particles were homogeneously dispersed in ethanol (solid content 20%) by a sonication dispersion equipment. The slurry was then heated to 80°C with stirring, and the silane coupling agent A174 (5%, calculated based on the weight of nano-CaCO3 particles) was added into the slurry. After the slurry was stirred for 120 min at 80°C, it was filtered and the filter cake was then dried at 120°C in low vacuum for 120 min to obtain silanated CaCO3 powders. 展開
- 求助,英文文獻翻譯~
- PMMA has good compatibility with PVC due to specific interaction of a hydrogen bonding type between carbonyl groups (C=O) of PMMA and hydrogen from (CHCl) groups of PVC (Belhaneche-Bensemra et al., 2002; Ramesh et al., 2002). Zhou et al... PMMA has good compatibility with PVC due to specific interaction of a hydrogen bonding type between carbonyl groups (C=O) of PMMA and hydrogen from (CHCl) groups of PVC (Belhaneche-Bensemra et al., 2002; Ramesh et al., 2002). Zhou et al. (2001) studied the relationship between the coating thickness of PMMA on the surface of talc and mechanical properties of PMMA-g-talc/PVC composites, and found that there existed a critical thickness. Xie (2001) found that the PMMA coating on talc improved the dispersion of talc in the PVC matrix and enhanced the interfacial adhesion between talc and PVC. There appears to be a critical coating thickness of PMMA on the talc surface for optimum toughening. Quan et al. (2002) reported improved toughness and intension of the PVC composites filled with CaCO3/ACR core-shell complex particles prepared by in-situ emulsion polymerization of acrylic ester. In the present work, PMMA coated on the surface of CaCO3 nanoparticles by in-situ emulsion polymerization was characterized by FT-IR and 1H-NMR. The effects of PMMA thickness and particle fraction on the mechanical properties of PMMA-coated CaCO3 /PVC nanocomposites were also investigated. 展開
- 幫忙翻譯一句話
- Catalysts were prepared by pore volume impregnation of ?-alumina
- 幫忙翻譯2
- 3.6. Advantages of chromia as promoter in copper-based Catalysts It should also be noted from Figs. 5 and 6 that in the steam reforming reaction to produce hydrogen for fuel cell applications, trace quantities (<0.4 wt.%) of Cr2O3 on Cu... 3.6. Advantages of chromia as promoter in copper-based Catalysts It should also be noted from Figs. 5 and 6 that in the steam reforming reaction to produce hydrogen for fuel cell applications, trace quantities (<0.4 wt.%) of Cr2O3 on Cu not only doubled the activity for the MSR but also halved the amount of CO formed, thereby enhancing H2 production. This improved selectivity reduces the problem of H2 separation from the reaction products in fuel cell applications. An important finding in this research is the role that very small amounts of Cr2O3 play in all the reactions investigated, namely, methanol synthesis, water gas shift and methanol steam reforming. In commercial co-precipitatedcopper-based methanol synthesis catalysts, copper is known to be the active component [3]. More recently, it has becomeestablished that ZnO promotes methanol synthesis and that surface species formed by Cu-ZnO interaction are responsible for methanol synthesis [42]. The role of Cr2O3 in commercial catalysts is thought to be similar to that of Al2O3, which is to act as stabilizer of the structure of the copper catalyst, thereby reducing sintering. In this study, as in a previous one [18] using a different technique todeposit chromia on the surface of skeletal copper, we have shown that Cr2O3 has a significant role in copper-based methanol synthesis from CO2. That role is to improve the methanol yield by reducing the RWGS reaction (Fig. 3) aswas observed in the earlier study [18]. A major finding of this study has been the very strong evidence the Cr2O3 has a synergistic effect on the activity of copper for methanol synthesis, methanol steam reforming and the water gas shift reactions. From Figs. 4 and 5 it can be seen that 0.85 wt.% Cr2O3 enhances the specific activity (mol/hm2 Cu) of skeletal copper 270% for the WGS and 150% for methanol steam reforming. In the case of methanol synthesis (Fig. 2) 0.61 wt.% Cr2O3 increases the specific activity of copper by 67%. The results for the WGS and MS reactions are similar to those obtained under the same reaction conditions using skeletal copper promoted by Cr2O3 which was deposited from sodium chromate in the caustic leach liquor [28]. In that study, the effect of chromia was more pronounced, with an increase in activity of 950% for theWGSand 168% for the MSR reaction, respectively, using skeletal copper containing 0.75 wt.% Cr2O3. For methanol synthesis over Cr2O3 promoted skeletal copperprepared using sodium chromate in the leach liquor, Ma et al. [18] observed no increase in the specific activity of copper. 展開
- 一個英語句子的翻譯---在線等
- it is no good crying over spilt milk. 覆水難收 請直譯這個句子。謝謝
- 化工專業(yè)英語求翻譯
- Hollow polymeric spheres have been attracting increasing interest because of their potential applications, which range from targeted drug delivery to advanced functional materi- als.[1,2] Because of their hollow core structure, such poly... Hollow polymeric spheres have been attracting increasing interest because of their potential applications, which range from targeted drug delivery to advanced functional materi- als.[1,2] Because of their hollow core structure, such polymeric spheres can encapsulate large quantities of guest moleculesD especially those spheres with functionalities within the empty coreDand release them at a later stage in a controlled man- ner. Although hollow polymeric spheres with dimensions in the micrometer and submicrometer regions are readily con- structedDby layer-by-layer deposition of polyelectrolytes onto a template core,[3±6] polymerizing monomers in lipid vesi- cles,[7,8] emulsion polymerization,[9,10] pH-induced micelliza- tion of a grafted copolymer,[11] and by the assembly of posi- tively charged polyelectrolytes and negatively charged nanoparticles[12]Dthe synthesis of hollow spheres 100 nm or less in size has only recently become the subject of research activity. Several different routes, such as the self-assembly of block copolymers in a selective solvent,[13,14] the deposition of polyelectrolytes on a decomplexable or soluble core,[15,16] and microemulsion (as well as miniemulsion) polymerization,[17,18] have been developed to form hollow polymeric nanospheres. Although some of these methods have been quite successful, these strategies require the core templates to be removed in order to create a hollow interior, or need large quantities of surfactants to form nanosized micelles. Furthermore, although the majority of the proposed applications of hollow nano- spheres or nanocapsules are concentrated in the biomedical field, most of the hollow polymeric spheres described to date are ill-suited for such purposes. Therefore, materials (in par- ticular for the surfaces of the hollow nanospheres) that are biocompatible, non-toxic, and sometimes also biodegradable, are highly desirable. Herein, we demonstrate a simple and di- rect method for fabricating hollow polymeric nanospheres with biocompatible and biodegradable macromolecules. In this approach, hollow polymeric nanospheres were formed in a completely aqueous system without the aid of surfactants, 展開
- 翻譯一段專業(yè)服裝用語.不會的不要進來搗亂.拒絕機翻.在線等!
- 101A-101.insidesiliconegripper(seesample)2.relaxedwaistband(seesample)3.waistshapingpanel(seesample)4.21/2widerelaxedflaredhem5.crotchpanelshouldbemediummattecontrol6.f... 101A-10 1.inside silicone gripper(see sample) 2.relaxed waist band(see sample) 3.waist shaping panel(see sample) 4.2 1/2 wide relaxed flared hem 5.crotch panel should be medium matte control 6.firm butt lift panel 7.relaxed waist band(see sample) 8.waist shaping panel(see sample) 9.firm butt lift bands 10.3/8 matte plush flat elastic with shiny coverstitch(see sample) 11.front ring sliders 12.3/8 fold-over matte plush elastic 13.waist shaping panels(see sample) 14.relaxed blind hem with silicone gripper inside(see sample) 15.cup construction see reference sample 16.satin covered removable straps 17.back ring sliders 18.relaxed blind with silicone gripper inside(see reference sample sent in october) 19.hook and eye closure(see reference sample) 101B-105B 1.3/8 fold-over matte elastic 2.matte underbust panels(see sample) 3.matte n'shine jacquard 4.waist shaping panels(see sample) 5.relaxed flared waist with silicone gripper inside(see sample) 6.waist shaping panel(see sample) 7.2 1/2 wide relaxed hem 8.firm shine butt lift panels 9.relaxed flared waist with silicone gripper inside(see sample) 10.waist shaping panel(see sample) 11.3/8 matte flat elastic w/ shiny coverstitch 12.firm shine butt lift panels 13.front ring sliders 14.3/8 fold-over matte plush elastic 15.waist shaping panels(see sample) 16.relaxed blind hem with silicone gripper inside(see sample) 17.cup construction see reference sample 18.satin covered removable straps 19.back ring sliders 20.relaxed blind with silicone gripper inside(see reference sample sent in october) 21.hook and eye closure(see reference sample) 我需要懂英語的服裝專業(yè)的......不是你這些機翻的................... 展開
- 環(huán)境英語文獻翻譯 急用
- Thereisagrowinginterestindeterminingmercury(Hg)levelsinthemarineenvironmentaswellasinfishforhumanconsumption.Methylmercury(MeHg)inparticularisthemosttoxicandbioaccumulati... There is a growing interest in determining mercury(Hg) levels in the marine environment as well as in fish for human consumption. Methyl mercury(Me Hg)in particular is the most toxic and bioaccumulative form of mercury in food webs and it is the predominant chemical form making up 80%-90% of the total mercury present in fish muscle tissue.Hence,fish and other organisms at the end of the food chain constitute the major source of MeHg in the human . As outcome of this risk,MeHg has been classically monitored in fish, and methodologies for mercury speciaion have increased significantly since the early 1990s. Currently, microwave-assisted extraction (MAE) has provided an efficient alternative strategy to conventional techniques for solvent extraction of a large amount of organometals compounds.The analytical techniques most frequently applied for Hg speciation analysis involve GC(GasChromatography) , GC-CICP-MS(Gas Chromatography -CInductively Coupled Plasma Mass Spectrometry) supercritical fluids chromatography (SFC),ion chromatograph(IC), HPLC-CCVAAS(High Performance Liqui Chromatography-Cold Vapor Atomic Absorption Spectrometry) or ICP-MS systems .Several authors recommended a back-extraction of mercury species from organic solvents to cysteine or sodium thiosulphate aqueous solutions .Because MeHg is the most common organomercury compound in biological materials ,here we offer a new simple and cost-effective method to determine MeHg. Basically, this method combines the microwave assisted extraction followed by clean-up with cysteine acetate solution and MeHg quantification by a direct mercury analyzer (DMA). 展開
- 納米材料英文文獻加翻譯
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