刺激的至亲乱45部,女人与拘做受全过程免费视频,少妇被又大又粗又爽毛片欧美,舌头伸进去添的我爽高潮

您好!歡迎訪問(wèn)上海胤煌科技有限公司網(wǎng)站!
全國(guó)服務(wù)咨詢熱線:

13390845525

當(dāng)前位置:首頁(yè) > 技術(shù)文章 > 超聲法粒度分析在乳劑行業(yè)的應(yīng)用

超聲法粒度分析在乳劑行業(yè)的應(yīng)用

更新時(shí)間:2020-03-24      點(diǎn)擊次數(shù):2211

Acoustic Particle Sizing of Milk

超聲法粒度分析在乳劑行業(yè)的應(yīng)用

Oil/Water, as well as, Water/Oil emulsions can partially degrade or even fully break up upon undergoing dilution. Thus, particle size measurements without dilution are desirable for emulsion characterization.

油/水以及水/油的乳液會(huì)在稀釋之后部分降解甚至*分解。因此,在不稀釋的情況下直接測(cè)量乳液的粒徑是一種理想方法。

The APS-100 Acoustic Particle Sizer1 measures -without the need for sample dilution Particle Size Distribution, Longitudinal Viscosity, Percent Solids, pH, Conductivity, and Temperature. Using a patented measurement design2, the APS-100 performs acoustic attenuation spectroscopy measurements in the ultrasonic range of 1-100 MHz.

美國(guó)MAS公司生產(chǎn)的APS-100超聲法粒度儀《1》可以不用稀釋?zhuān)苯訙y(cè)量粒度分布,縱向粘度,固含量,PH值,電導(dǎo)率及溫度。通過(guò)測(cè)量設(shè)計(jì)《2》,APS-100可以在1-100MHz的超聲波范圍內(nèi)進(jìn)行聲學(xué)衰減光譜測(cè)量。

The resulting attenuation spectrum of dB/cm vs. Frequency (MHz) is used by a patented first-principle algorithm3 to calculate particle size distribution data without making assumptions regarding the shape of the particle size distribution, e.g. unimodal, bimodal, lognormal, Gaussian, etc. The APS-100 is calibrated with water without the need for particle size calibration standards.

通過(guò)使用原理算法使用產(chǎn)生的dB/cm / 頻率(MHz)的衰減譜來(lái)計(jì)算粒徑分布數(shù)據(jù),而無(wú)需對(duì)粒徑分布的形狀進(jìn)行假設(shè),例如單峰、雙峰、對(duì)數(shù)正態(tài)、高斯等。APS-100是用水進(jìn)行校準(zhǔn)的,不需要使用粒度校準(zhǔn)標(biāo)準(zhǔn)。

APS measurements are made by low-power (inaudible) short acoustic pulses (about 10 microseconds long) that do not affect the sample’s dispersion state as depicted in figure 1. Another instrument, the Zeta-APS, measures Zeta potential in addition to all these parameters.

APS測(cè)量采用低功率(聽(tīng)不清)短聲脈沖(約10微秒長(zhǎng)),不影響圖1所示的樣品的分散狀態(tài)。另外Zeta-APS儀器,除了測(cè)量上述所有這些參數(shù)外,還測(cè)量Zeta電位。

 

Fig. 1. Waveforms of the ultrasonic pulses applied and measured during Acoustic Particle Sizing.

圖1 - 超聲波脈測(cè)量粒度的過(guò)程中,超聲波的脈沖波形。

 

Fig. 2. Acoustic Attenuation Spectra of 4% wt silica-water sample (3 runs: ♦, ■, ▲) alongside DI water (x).

圖2 - 4%wt二氧化硅水樣(3次:♦, ■, ▲)和去離子水的聲衰減譜。

 

Fig. 3. Particle Size Distribution overlaid data for three consecutive runs of a 4% wt silica-water sample.

圖3 – 三次4%wt二氧化硅水樣的粒度分布數(shù)據(jù)疊加圖

Figures 2 and 3 show attenuation spectra and particle size distribution data for three consecutive runs of a silica-water sample at 4% wt percent solids level (Nissan Chemical, Houston, TX). A water (solvent) spectrum is also shown. A solvent spectrum (excluding the particles) is required for particle size computation.

圖2和圖3顯示了連續(xù)三次4%wt二氧化硅水樣的粒度分布和聲衰減譜(Nissan Chemical, Houston, TX)。水樣的譜圖也有顯示。粒徑計(jì)算需要溶劑譜(不包括微粒)。圖3所示的PSD在0.1微米有相當(dāng)窄的分布,接近MP1040二氧化硅的標(biāo)稱(chēng)平均粒徑。

Emulsion Analysis

乳液測(cè)試分析

For this study, five consumer-type dairy samples were characterized as follows:

在本研究中,五種消費(fèi)型乳液樣本的特征如下:

- Half and Half Cream (HHC) 半脂乳

- Whole Milk (WM) 全脂乳

- 1% Low-fat Chocolate Milk (CM) 1% 低脂巧克力乳 

- 1% Low-fat Milk (LFM) 1% 低脂乳

– Nonfat Milk (NFM) 脫脂乳

The samples were analyzed without dilution. They were continuously mixed by the APS- 100’s onboard mechanical mixer. Sample temperature was kept at 26 ºC by the APS- 100’s sample heater.

這些樣品沒(méi)有進(jìn)行稀釋。他們是由APS-100的內(nèi)置機(jī)械混合器連續(xù)混合。通過(guò)APS-100的加熱系統(tǒng),保證樣品在26℃。

Acoustic Data

超聲數(shù)據(jù)

 

Fig. 4. Acoustic Attenuation Spectra for five milk samples.

圖4 – 5種乳劑樣品的超聲衰減波譜。

Figure 4 shows acoustic attenuation spectra, dB/cm vs. Frequency (MHz), for the five milk samples. Attenuation levels decrease in the following order due to each sample’s fat content level as follows (see below about the 1% chocolate milk sample):

HHC > WM > CM > LFM > NFM

圖4顯示了5種乳的dB/cm / 頻率(MHz)的衰減譜。由于每個(gè)樣品的脂肪含量水平,衰減水平按以下順序降低(見(jiàn)下文關(guān)于1%巧克力牛奶樣品):

HHC半脂乳 > WM全脂乳 > CM1% 低脂巧克力乳 > LFM 低脂乳> NFM脫脂乳

Regarding Chocolate vs. Low-fat milk, the difference in attenuation is due to the added chocolate flavor components.

關(guān)于巧克力和低脂乳,衰減的差異是由于添加了巧克力風(fēng)味成分。

These samples were analyzed at 26 ºC, kept constant by the APS-100’s onboard heater. Also, the samples were continuously mixed during these measurements by the APS-100’s mechanical mixer.

這些樣品在分析過(guò)程中通過(guò)APS的加熱系統(tǒng)保持溫度在26℃。此外,在這些測(cè)量過(guò)程中,由APS-100的機(jī)械混合器連續(xù)混合樣品。

 

Fig. 5. Particle size distribution data for a whole milk sample by Acoustic Particle Sizing (APS-100).

圖5 – APS-100測(cè)量的全脂乳的粒度分布數(shù)據(jù)。

Figure 5 below presents the particle size distribution for a whole milk sample analyzed without dilution. The fat-free milk sample was used to represent the intrinsic attenuation required by the acoustic particle sizing computations4.

圖5顯示了未經(jīng)稀釋而分析的全脂乳的粒度分布。脫脂乳樣品用于表示聲學(xué)顆粒尺寸計(jì)算所需的固有衰減《4》。

Intrinsic attenuation corresponds to the solvent attenuation, i.e. attenuation excluding the discrete phase (particles/droplets) of the sample. The particle and solvent physical properties required by the particle size computations were obtained from published data5.

固有衰減對(duì)應(yīng)于溶劑衰減,即不包括樣品的離散相(顆粒/液滴)的衰減。顆粒尺寸計(jì)算所需的顆粒和溶劑物理性質(zhì)是從已發(fā)表的數(shù)據(jù)中獲得的《5》。

Some of the corresponding particle size data for the whole milk sample are as follows:

全脂乳樣品的相應(yīng)粒度數(shù)據(jù)如下

Mean particle size, Volume weighted: 1.8 µm, 25th, 75th percentiles: 0.9, 2.5 µm

Mean particle size, Area weighted: 1.1 µm, 25th, 75th percentiles: 1.46, 1.5 µm

體積平均粒徑:1.8μm,D25 為0.9μm,D75為2.5μm

面積平均粒徑:1.1μm,D25 為1.46μm,D75為1.5μm

 

 

Figure 6 above corresponds to a sample of half and half creamer measured by an APS- 100 instrument without dilution. The particle size data is as follows:

Mean particle size, Volume weighted: 1.45 µm, 25th, 75th percentiles: 0.53, 2.6 µm

Mean particle size, Area weighted: 0.65 µm, 25th, 75th percentiles: 0.2, 0.68 µm

圖6對(duì)應(yīng)的是用APS- 100儀器測(cè)量的沒(méi)有稀釋半脂乳樣品的測(cè)試數(shù)據(jù):

體積平均粒徑:1.45μm,D25 為0.53μm,D75為2.6μm

面積平均粒徑:0.65μm,D25 為0.20μm,D75為0.68μm

REFERENCES

1. Matec Applied Sciences, Northborough, MA USA, www.matecappliedsciences。。com)

2. US Patent 6,604,408

3. US Patent 6,119,510

4. McClements, D. J., and Povey, J. W., Ultrasonic analysis of edible fats and oils, Ultrasonics, vol 30, 6, 1992.

5. Lopez, C., Briard-Bion, V., Camier, B., Gassi, J. Y., Milk Fat Thermal Properties and Solid Fat Content in Emmental Cheese: A Differential Scanning Calorimetry Study, J. Dairy Sci., 89:2894-2910, 2006/

上海胤煌科技有限公司
地址:上海市浦東新區(qū)航川路18號(hào)
郵箱:info@yh-tek.com
傳真:021-58220558
關(guān)注我們
歡迎您關(guān)注我們的微信公眾號(hào)了解更多信息:
歡迎您關(guān)注我們的微信公眾號(hào)
了解更多信息
含着她两个硕大的乳峰视频| 被三个老头捆着躁我一个爽文| 国产做a爱免费视频在线观看| 国产精品扒开腿做爽爽爽a片小说| 人妻精品久久久久中文字幕一冢本| 欧美日韩国产| 要灬要灬再深点受不了好舒服| 熟妇人妻久久中文字幕| 中文无码熟妇人妻av在线| 青春草在线视频观看| 又大又紧又粉嫩18p少妇| 少妇被粗大的猛烈进出免费视频| 中国娇小与黑人巨大交| 国产最新精品sm调教视频| 欧美精产国品一二三产品区别在哪| 精品无码欧美一区二区三区不卡| 免费网站看v片在线18禁无码| 无码欧美人xxxxx日本漫画| 日韩av无码一区二区三区| 斗破苍穹年番在线观看免费| 精品国产一区二区三区久久| 18成禁人10000视频免费| 70歳の熟女セックス合集| 欧美+日本+国产| 255是多少码的鞋子男| 国产99久久久国产精品免费看| 人人妻人人澡人人爽欧美一区九九| 国产日韩欧美一区二区三区| 国产女明星裸体xxxx| japanese丰满人妻hd| 亚洲春色av无码专区456| 4399日本在线观看完整| 久久综合亚洲色hezyo国产| 在线观看的资源视频| 欧美性猛交xxxx乱大交蜜桃| 国产偷国产偷亚洲高清app| 丰满熟女人妻大乳波多野吉衣| 天天澡天天狠天干天啪啪图片| 将军猛烈顶弄h太子肉肉| 无码AV人妻一区二区三区四区| 久久免费看少妇高潮v片特黄|