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    Micro-solid phase extraction of haloacetic acids
    61.
    发明授权
    Micro-solid phase extraction of haloacetic acids 有权
    微量固相萃取卤代乙酸

    公开(公告)号：US09075037B2

    公开(公告)日：2015-07-07

    申请号：US14024526

    申请日：2013-09-11

    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS ,  KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY

    Inventor： Chanbasha Basheer ,  Hakimu Nsubuga

    IPC: G01N33/18 ,  C02F1/28 ,  G01N30/00

    CPC classification number: G01N33/18 ,  B01J20/0229 ,  B01J20/103 ,  B01J20/2805 ,  B01J20/3236 ,  B01J2220/485 ,  C02F1/286 ,  G01N1/405 ,  G01N2030/009

    Abstract: The micro-solid phase extraction of haloacetic acids is a procedure that extracts haloacetic acids from aqueous solution using iron-modified rice husk silica as the stationary phase or sorbent. Rice husks provide an excellent source of silica. The sorbent is prepared by incinerating the husks to produce a powder that is treated with 1.0 M nitric acid for 24 hours to produce rice husk silica. The silica is washed with base, cetyltrimethylammonium bromide is added, and then titrated with a 10% Fe3+ solution to pH 5, which forms a gel. The gel is aged, filtered, dried, and calcined to produce a nitrate-free iron-modified rice husk sorbent. The sorbent is then packaged in porous, heat-sealed polypropylene membrane envelopes and used for extraction of HAAs from water. The HAA analytes are desorbed by ultrasonication in methanol for analysis and quantification.

    Abstract translation: 卤代乙酸的微固相萃取是使用铁改性稻壳二氧化硅作为固定相或吸附剂从水溶液中提取卤代乙酸的方法。 稻壳提供了极好的二氧化硅来源。 通过焚烧外壳制备吸附剂来制备粉末，其用1.0M硝酸处理24小时以产生稻壳二氧化硅。 二氧化硅用碱洗涤，加入十六烷基三甲基溴化铵，然后用10％Fe 3+溶液滴定至pH5，形成凝胶。 将凝胶老化，过滤，干燥并煅烧以产生无硝酸盐的铁改性稻壳吸附剂。 然后将吸附剂包装在多孔，热密封的聚丙烯膜包膜中，并用于从水中提取HAAs。 HAA分析物通过甲醇超声分解和定量解吸。

    Method and apparatus for Arabic and Farsi font recognition
    64.
    发明授权
    Method and apparatus for Arabic and Farsi font recognition 有权
    阿拉伯语和波斯语字体识别的方法和装置

    公开(公告)号：US09014481B1

    公开(公告)日：2015-04-21

    申请号：US14258650

    申请日：2014-04-22

    Applicant: King Fahd University of Petroleum and Minerals ,  King Abdulaziz City for Science and Technology

    Inventor： Hamzah Abdullah Luqman ,  Sabri Abdullah Mohammed

    IPC: G06K9/48 ,  G06K9/18

    CPC classification number: G06K9/481 ,  G06K9/4619 ,  G06K9/6828 ,  G06K2209/013

    Abstract: A method for Arabic and Farsi font recognition for determining the font of text using a nearest neighbor classifier, where the classifier uses a combination of features including: box counting dimension, center of gravity, the number of vertical and horizontal extrema, the number of black and white components, the smallest black component, the Log baseline position, concave curvature features, convex curvature features, direction and direction length features, Log-Gabor features, and segmented Log-Gabor features. The method is tested using various combination of features on various text fonts, sizes, and styles. It is observed the segmented Log-Gabor features produce a 99.85% font recognition rate, and the combination of all non-Log-Gabor features produces a 97.96% font recognition rate.

    Abstract translation: 用于使用最近邻分类器确定文本的字体的阿拉伯语和波斯语字体识别的方法，其中分类器使用特征的组合，其包括：盒计数维度，重心，垂直和水平极值的数量，黑色的数量 白色组件，最小黑色组件，对数基线位置，凹曲面特征，凸曲率特征，方向和方向长度特征，Log-Gabor特征和分段Log-Gabor特征。 该方法使用各种文本字体，大小和样式的各种功能组合进行测试。 观察到分割的Log-Gabor特征产生99.85％的字体识别率，并且所有非Log-Gabor特征的组合产生97.96％的字体识别率。

    DIHYDROQUINONE DERIVATIVES OF PIPERIDINE AND PIPERAZINE
    65.
    发明申请
    DIHYDROQUINONE DERIVATIVES OF PIPERIDINE AND PIPERAZINE 有权
    哌啶和哌嗪的二氢喹啉酮衍生物

    公开(公告)号：US20150094467A1

    公开(公告)日：2015-04-02

    申请号：US14543348

    申请日：2014-11-17

    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS ,  KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY

    Inventor： NISAR ULLAH

    IPC: C07D401/12 ,  C07D239/80

    CPC classification number: C07D401/12 ,  C07D239/80 ,  C07D401/04 ,  C07D401/14

    Abstract: The dihydroquinone derivatives of piperidine and piperazine are 7-piperazinyl and 7-piperadinyl-3,4-dihydroquinazolin-2(1H)-ones that exhibit D2 and 5-HT1A receptor binding affinities, making them suitable for use as the active ingredient of pharmaceuticals for the treatment of schizophrenia. The derivatives have the general formula: where X is carbon or nitrogen and R is a group selected from a through f having the formula: or a pharmaceutically acceptable salt thereof. The piperazine compounds are prepared by condensing 4-bromo-2-nitro-benzonitrile with 1-Boc-piperazine (1-tert-butoxycarbonyl-piperazine) to form an intermediate that is converted to a piperazinyl-3,4-dihydroquinazolin-2(1H)-one. Subsequent reductive amination with the biarylaldehydes a through f completes the synthesis of the 7-piperadinyl-3,4-dihydroquinazolin-2(1H)-ones. The piperadinyl compounds are prepared from tert-butyl-4-(2-oxo-1,2,3,4-tetradihydroquinazolin-7-yl)piperidine-1-carboxylate, which is converted to 7-(piperidin-4-yl)-3,4-dihyroquinazolin-2(1H)-one. Subsequent reductive amination with the biarylaldehydes a through f completes the synthesis of the 7-piperidinyl-3,4-dihydroquinazolin-2(1H)-ones.

    Abstract translation: 哌啶和哌嗪的二氢醌衍生物是显示D2和5-HT1A受体结合亲和力的7-哌嗪基和7-哌啶基-3,4-二氢喹唑啉-2（1H） - 酮，使其适合用作药物的活性成分 用于治疗精神分裂症。 衍生物具有以下通式：其中X是碳或氮，R是选自具有下式的通式f的基团：或其药学上可接受的盐。 哌嗪化合物通过将4-溴-2-硝基 - 苄腈与1-Boc-哌嗪（1-叔丁氧基羰基 - 哌嗪）缩合形成转化为哌嗪基-3,4-二氢喹唑啉-2（ 1H） - 酮。 随后的二芳基醛a至f的还原胺化完成7-哌啶基-3,4-二氢喹唑啉-2（1H） - 酮的合成。 哌啶基化合物由4-（2-氧代-1,2,3,4-四氢喹唑啉-7-基）哌啶-1-甲酸叔丁酯制备，将其转化为7-（哌啶-4-基） -3,4-二羟基喹唑啉-2（1H） - 酮。 随后用二芳基醛a至f的还原胺化完成了7-哌啶基-3,4-二氢喹唑啉-2（1H） - 酮的合成。

    CATHODIZED GOLD NANOPARTICLE GRAPHITE PENCIL ELECTRODE AND METHOD FOR GLUCOSE DETECTION
    66.
    发明申请
    CATHODIZED GOLD NANOPARTICLE GRAPHITE PENCIL ELECTRODE AND METHOD FOR GLUCOSE DETECTION 审中-公开
    阴离子金纳米石墨石墨电极及葡萄糖检测方法

    公开(公告)号：US20150090601A1

    公开(公告)日：2015-04-02

    申请号：US14042419

    申请日：2013-09-30

    Applicant: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY ,  KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    Inventor： ABDEL-NASSER METWALLY ALY KAWDE ,  MD. ABDUL AZIZ

    IPC: G01N27/327 ,  C25D11/00 ,  G01N27/30

    CPC classification number: G01N27/327 ,  G01N27/30 ,  G01N27/308 ,  G01N27/3277 ,  G01N27/3278 ,  G01N27/48

    Abstract: The cathodized gold nanoparticle graphite pencil electrode is a sensitive enzymeless electrochemical glucose sensor based on the cathodization of AuNP-GPE. Cyclic voltammetry shows that advantageously, the cathodized AuNP-GPE is able to oxidize glucose partially at low potential (around −0.27 V). Fructose and sucrose cannot be oxidized at

    Abstract translation: 阴极金纳米颗粒石墨铅笔电极是基于AuNP-GPE阴极化的敏感无酶电化学葡萄糖传感器。 循环伏安法显示有利地，阴极AuNP-GPE能够在低电位（约-0.27V）下部分氧化葡萄糖。 果糖和蔗糖不能在<0.1 V时被氧化，因此在-0.27V左右的葡萄糖氧化峰值足以在果糖和蔗糖存在下选择性检测葡萄糖。 然而，在-0.27V附近的葡萄糖氧化峰值电流要低得多，这应该被提高以获得低检测限。 AuNP-GPE阴极化将葡萄糖的氧化峰值电流提高到-0.27V左右。传感器的动态范围在0.05至5.0mM的葡萄糖之间，线性良好（R2 = 0.999）。 在果糖，蔗糖和NaCl的存在下，观察到葡萄糖几乎没有干扰作用。

    CATALYTIC COMPOSITION FOR THE ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE
    67.
    发明申请
    CATALYTIC COMPOSITION FOR THE ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE 有权
    用于二氧化碳电化学还原的催化组合物

    公开(公告)号：US20150072853A1

    公开(公告)日：2015-03-12

    申请号：US14539337

    申请日：2014-11-12

    Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS ,  KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY

    Inventor： SALEEM UR RAHMAN ,  SHAKEEL AHMED ,  MOHAMMAD MOZAHAR HOSSAIN ,  SHAHID MUHAMMAD BASHIR

    IPC: B01J23/755 ,  B01J37/02 ,  B01J37/08 ,  B01J37/34

    CPC classification number: B01J23/14 ,  B01J23/755 ,  B01J37/0201 ,  B01J37/0213 ,  B01J37/08 ,  B01J37/341 ,  C25B11/0452

    Abstract: The catalytic composition for the electrochemical reduction of carbon dioxide is a metal oxide supported by multi-walled carbon nanotubes. The metal oxide may be nickel oxide (NiO) or tin dioxide (SnO2). The metal oxides form 20 wt % of the catalyst. In order to make the catalysts, a metal oxide precursor is first dissolved in deionized water to form a metal oxide precursor solution. The metal oxide precursor solution is then sonicated and the solution is impregnated in a support material composed of multi-walled carbon nanotubes to form a slurry. The slurry is then sonicated to form a homogeneous solid solution. Solids are removed from the homogeneous solid solution and dried in an oven for about 24 hours at a temperature of about 110° C. Drying is then followed by calcination in a tubular furnace under an argon atmosphere for about three hours at a temperature of 450° C.

    Abstract translation: 用于二氧化碳的电化学还原的催化组合物是由多壁碳纳米管支撑的金属氧化物。 金属氧化物可以是氧化镍（NiO）或二氧化锡（SnO 2）。 金属氧化物形成20重量％的催化剂。 为了制备催化剂，首先将金属氧化物前体溶解在去离子水中以形成金属氧化物前体溶液。 然后将金属氧化物前体溶液超声处理，并将溶液浸渍在由多壁碳纳米管组成的载体材料中以形成浆料。 然后将浆液超声处理以形成均匀的固溶体。 将固体从均匀的固溶体中除去，并在烘箱中在约110℃的温度下干燥约24小时。然后在管式炉中在氩气气氛下在450℃的温度下煅烧约3小时 C。

    DISPOSABLE PALLADIUM NANOPARTICLE-MODIFIED GRAPHITE PENCIL ELECTRODE
    68.
    发明申请
    DISPOSABLE PALLADIUM NANOPARTICLE-MODIFIED GRAPHITE PENCIL ELECTRODE 有权
    可改性的纳米PAN改性石墨电极

    公开(公告)号：US20150053554A1

    公开(公告)日：2015-02-26

    申请号：US13973974

    申请日：2013-08-22

    Applicant: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY ,  KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

    Inventor： Abdel-Nasser Metwally Aly KAWDE ,  MD ABDUL AZIZ

    IPC: G01N27/30 ,  C23C30/00

    CPC classification number: B82Y30/00 ,  G01N27/30

    Abstract: The disposable palladium nanoparticle-modified graphite pencil electrode (PdNP-GPE) is a graphite pencil electrode having palladium nanoparticles disposed on the surface of the electrode. The electrode is prepared by adding ascorbic acid to an aqueous solution of ammonium tetrachloropalladate(II) [(NH4)2PdCl4] at room temperature to form the palladium nanoparticles (PdNPs), immersing a GPE in the aqueous solution of PdNPs, and heating the solution to about 75° C. to deposit the PdNPs on the GPE. The palladium nanoparticle modified graphite pencil electrode may be used in an electrochemical cell for quantitative analysis of hydrogen peroxide content in an unknown solution.

    Abstract translation: 一次性钯纳米颗粒改性石墨铅笔电极（PdNP-GPE）是具有设置在电极表面上的钯纳米颗粒的石墨铅笔电极。 通过在室温下将抗坏血酸加入到四氯钯铵（II）[（NH 4）2 PdCl 4]的水溶液中，形成钯纳米颗粒（PdNP），将GPE浸入PdNP的水溶液中并加热溶液 至约75℃，以将PdNP沉积在GPE上。 钯纳米颗粒改性石墨铅笔电极可用于电化学电池中，用于定量分析未知溶液中过氧化氢含量。

    Peak detection method using blind source separation
    69.
    发明授权
    Peak detection method using blind source separation 有权
    峰值检测方法采用盲源分离

    公开(公告)号：US08958750B1

    公开(公告)日：2015-02-17

    申请号：US14025763

    申请日：2013-09-12

    Applicant: King Fahd University of Petroleum and Minerals ,  King Abdulaziz City for Science and Technology

    Inventor： Zahid Saleem ,  Samir Al-Ghadhban ,  Tareq Y. Al-Naffouri

    IPC: H04B15/00 ,  H04B17/00 ,  H03F1/26 ,  H04B1/10

    CPC classification number: H04W16/14 ,  G06K9/00516 ,  G06K9/0053 ,  G06K9/0057 ,  H04B1/719 ,  H04B2201/692 ,  H04L27/0004 ,  H04L27/0006

    Abstract: The peak detection method using blind source separation extracts true peaks from noisy peaks in a more robust way that does not require any a priori information. Information regarding true peak location is obtained by thresholding the output of a wavelet transform. The value of the threshold is dependent on noise variance. While noise variance is normally unknown, the present method implements a blind source separation technique to calculate the noise variance. The blind source separation technique does not require information of the incoming signal or the channel noise, and hence is suitable for CR (cognitive radio) peak detection.

    Abstract translation: 使用盲源分离的峰检测方法以更鲁棒的方式从噪声峰提取真实峰值，其不需要任何先验信息。 通过阈值化小波变换的输出来获得关于真峰位置的信息。 阈值取决于噪声方差。 虽然噪声方差通常是未知的，但是本方法实现了盲源分离技术来计算噪声方差。 盲源分离技术不需要输入信号或信道噪声的信息，因此适用于CR（认知无线电）峰值检测。

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