Roberto Bianchini - Academia.edu (original) (raw)

Papers by Roberto Bianchini

Canadian Journal of Chemistry, 2003

Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batis... more Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batista, Marcio P. de Araujo, Roberto C. Bianchini, Glaucius Oliva, Javier Ellena, and Brian R. James ... 13. AA Batista, EA Polato, SL Queiroz, OR Nascimento, BR James, and SJ Rettig. ...

ABSTRACT The availability of commercial high resolution satellite images has drawn cartographer&a... more ABSTRACT The availability of commercial high resolution satellite images has drawn cartographer's attention to utilise them for urban area mapping. Orthorectified images may be used as a map directly or as a support to update existing maps at medium-large scale. Nevertheless, the nominal resolution itself does not guarantee that images are suitable for this specific use: the acquisition geometry and the actual resolution may limit the applicability of this product. In fact, the nominal scale, certified in the ancillary metadata files, does not reflect the actual geometric scale of the image automatically. Furthermore, off-nadir angle and sun elevation angle influence the geometry of the image and the object representation. This has significant effects particularly in urban areas, where urban features and their shadows may mask wide areas. However, the availability of these images may be of crucial importance in developing countries, where maps are lacking or it is difficult to obtain them. In this study an application of Ikonos images to the city of Tangier (Morocco) is developed. The usage of images, the comparison between the orthorectified image and the existing maps of the city and the process of drawing the map are addressed and discussed

Canadian Journal of Chemistry, 2003

Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batis... more Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batista, Marcio P. de Araujo, Roberto C. Bianchini, Glaucius Oliva, Javier Ellena, and Brian R. James ... 13. AA Batista, EA Polato, SL Queiroz, OR Nascimento, BR James, and SJ Rettig. ...

The Journal of Physical Chemistry, 1994

Angew Chem Int Ed, 1997

ABSTRACT An L-shaped arrangement of bromine atoms is found in the 2:1 π complex formed by electro... more ABSTRACT An L-shaped arrangement of bromine atoms is found in the 2:1 π complex formed by electrophilic bromination of tetraneopentylethene. The reaction stops at this stage, which for the first time allows detection and determination of the thermodynamic parameters by UV spectroscopy of a 2:1 bromine·olefin complex. Theoretical calculations predict an olefin·Br2·Br2 rather than a Br2·olefin·Br2 structure.

Bioresources, 2007

Many natural dyes, for example carminic acid, are soluble in water. We present a simple strategy ... more Many natural dyes, for example carminic acid, are soluble in water. We present a simple strategy to naturalize synthetic azadyes through their linkage with lactose to induce their water solubility. The dyeing process of textile fibres then becomes possible in water without additives such as surfactants and mordants, which result in products that are difficult to eliminate. Glyco-azadyes (GADs) we are presenting here are obtained through a diether linker to bond the azadye and the sugar. Tinctorial tests were carried out with fabrics containing wool, polyester, cotton, nylon, and acetate. GADs were found to be multipurpose and capable of dyeing many fabrics efficiently under mild conditions.

Journal of Cardiothoracic Surgery, 2015

ABSTRACT The present application refers to colouring products of formula (I) soluble in water at ... more ABSTRACT The present application refers to colouring products of formula (I) soluble in water at room temperature. Here a piperazine unity is inserted, bonded directly to the saccharidic unit. This moiety afford to the final glyconjugated colorants some very advantages characteristics for dyeing leather, textiles, wood and hairs.

Annali di chimica, 2002

EPR spectroscopy was applied to obtain qualitative and quantitative information on the radicals p... more EPR spectroscopy was applied to obtain qualitative and quantitative information on the radicals produced in disinfection processes of wastewater for agricultural reuse. The DEPMPO spin trap was employed to detect hydroxyl and carbon-centered short living radicals in two different peracetic acid solutions and a hydrogen peroxide solution used for water disinfection either in the absence or in the presence of UV-C irradiation. Moreover, three different kinds of water (wastewater, demineralized water, distilled water) were analysed in order to assess the contribution of Fenton reactions to the radical production. The spectroscopic results were discussed in relation to the efficiency of the different oxidizing agents and UV irradiation in wastewater disinfection evaluated as Escherichia Coli, Faecal and Total Coliforms inactivation.

Journal of the Chemical Society, Perkin Transactions 2, 1991

EP 2 085 434 A1 2 5 10 15 20 25 30 35 40 45 50 55 Description

Journal of the Chemical Society, Perkin Transactions 2, 1981

The steric course of the gas-phase reaction of trans-[2 H 2] ethylene oxide with HF, HCl, and HBr... more The steric course of the gas-phase reaction of trans-[2 H 2] ethylene oxide with HF, HCl, and HBr was investigated in order to test experimentally a mechanistic proposal based on ab initio calculations involving a concerted syn-opening mechanism. In contrast with this ...

Journal of cardiovascular medicine (Hagerstown, Md.), 2006

Coronary perforation is a recognized hazard following cardiac catheterization and may lead to a c... more Coronary perforation is a recognized hazard following cardiac catheterization and may lead to a catastrophic outcome. Prompt decision-making following diagnosis is of key importance. Whether to perform prolonged attempts at percutaneous repair or to promptly refer the patient for emergency surgery soon after diagnosis still remains a matter of debate. We report the case of a 78-year-old woman suffering from coronary artery perforation during left anterior descending coronary artery percutaneous transluminal coronary angioplasty-stenting, who underwent unsuccessful multiple prolonged attempts at percutaneous repair followed by subsequent successful emergency surgery.

AORTA, 2014

Alkaptonuria is an autosomal recessive trait resulting in an error of aromatic amino acids metabo... more Alkaptonuria is an autosomal recessive trait resulting in an error of aromatic amino acids metabolism. Heyde's syndrome is a condition clustering together aortic valve stenosis and gastrointestinal bleeding from colonic angiodysplasia. At present, there is no report describing the association of the latter two syndromes in the same patient. Here we present the case of a patient with severe aortic stenosis, alkaptonuria, and Heyde's syndrome. The patient underwent aortic valve replacement by means of a valvular bioprosthesis and the histological examination of the aortic cusps revealed calcific degeneration. This was associated with stromal degeneration characterized by extra-cellular deposition of granular, brownish-pigmented material along with macrophages and multiple foci of calfication showing the same brownish pigmentation. This configuration represents the typical pattern of homogentisic acid accumulation known as ochronosis. The postoperative course was uneventful and the echocardiographic follow-up at 6 months postoperatively showed good-functioning of the aortic valve bioprosthesis.

International Journal of Organic Chemistry, 2013

The Journal of Physical Chemistry, 1994

SSRN Electronic Journal, 2000

In this paper we examine the profitability of trading strategies based on target prices embedded ... more In this paper we examine the profitability of trading strategies based on target prices embedded in equity research reports. We adopt target prices as information signals to build our portfolio strategy. At the first stage, we exploit implicit returns (difference between the current price and the target price) as a buying or short selling signal to open every transaction in the portfolio. Next, we use raw and adjusted target prices as a closing transaction signal. We build three different strategies to verify if the overshooting of target prices revealed by several studies could affect the profitability of a trading strategy based on these target prices. We have formed four portfolios within every strategy to verify whether analysts' target prices have any investment value. We find that all strategies deliver positive abnormal returns against the market. In particular, the highest and lowest implicit return classes exhibit the highest stock returns and abnormal returns. In the last part, we control these returns for systematic risk, factors through the CAPM and the Fama & French three-factor model. The positive performances of our strategies persist and, in particular, our strategies beat the market with consistent abnormal returns in all the four implicit return classes analysed. From the three factors equation, it seems that analysts tend to advise buying stocks with risk above the average market risk, with growth profile and with large market value. Conversely analysts advise selling value stocks and those with a negative beta.

Canadian Journal of Chemistry, 2003

Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batis... more Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batista, Marcio P. de Araujo, Roberto C. Bianchini, Glaucius Oliva, Javier Ellena, and Brian R. James ... 13. AA Batista, EA Polato, SL Queiroz, OR Nascimento, BR James, and SJ Rettig. ...

ABSTRACT The availability of commercial high resolution satellite images has drawn cartographer&a... more ABSTRACT The availability of commercial high resolution satellite images has drawn cartographer's attention to utilise them for urban area mapping. Orthorectified images may be used as a map directly or as a support to update existing maps at medium-large scale. Nevertheless, the nominal resolution itself does not guarantee that images are suitable for this specific use: the acquisition geometry and the actual resolution may limit the applicability of this product. In fact, the nominal scale, certified in the ancillary metadata files, does not reflect the actual geometric scale of the image automatically. Furthermore, off-nadir angle and sun elevation angle influence the geometry of the image and the object representation. This has significant effects particularly in urban areas, where urban features and their shadows may mask wide areas. However, the availability of these images may be of crucial importance in developing countries, where maps are lacking or it is difficult to obtain them. In this study an application of Ikonos images to the city of Tangier (Morocco) is developed. The usage of images, the comparison between the orthorectified image and the existing maps of the city and the process of drawing the map are addressed and discussed

Canadian Journal of Chemistry, 2003

Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batis... more Dichloro(diphosphine)(2-pyridyl-ketone)ruthenium(II) complexes1 Salete L. Queiroz, Alzir A. Batista, Marcio P. de Araujo, Roberto C. Bianchini, Glaucius Oliva, Javier Ellena, and Brian R. James ... 13. AA Batista, EA Polato, SL Queiroz, OR Nascimento, BR James, and SJ Rettig. ...

The Journal of Physical Chemistry, 1994

Angew Chem Int Ed, 1997

ABSTRACT An L-shaped arrangement of bromine atoms is found in the 2:1 π complex formed by electro... more ABSTRACT An L-shaped arrangement of bromine atoms is found in the 2:1 π complex formed by electrophilic bromination of tetraneopentylethene. The reaction stops at this stage, which for the first time allows detection and determination of the thermodynamic parameters by UV spectroscopy of a 2:1 bromine·olefin complex. Theoretical calculations predict an olefin·Br2·Br2 rather than a Br2·olefin·Br2 structure.

Bioresources, 2007

Many natural dyes, for example carminic acid, are soluble in water. We present a simple strategy ... more Many natural dyes, for example carminic acid, are soluble in water. We present a simple strategy to naturalize synthetic azadyes through their linkage with lactose to induce their water solubility. The dyeing process of textile fibres then becomes possible in water without additives such as surfactants and mordants, which result in products that are difficult to eliminate. Glyco-azadyes (GADs) we are presenting here are obtained through a diether linker to bond the azadye and the sugar. Tinctorial tests were carried out with fabrics containing wool, polyester, cotton, nylon, and acetate. GADs were found to be multipurpose and capable of dyeing many fabrics efficiently under mild conditions.

Journal of Cardiothoracic Surgery, 2015

ABSTRACT The present application refers to colouring products of formula (I) soluble in water at ... more ABSTRACT The present application refers to colouring products of formula (I) soluble in water at room temperature. Here a piperazine unity is inserted, bonded directly to the saccharidic unit. This moiety afford to the final glyconjugated colorants some very advantages characteristics for dyeing leather, textiles, wood and hairs.

Annali di chimica, 2002

EPR spectroscopy was applied to obtain qualitative and quantitative information on the radicals p... more EPR spectroscopy was applied to obtain qualitative and quantitative information on the radicals produced in disinfection processes of wastewater for agricultural reuse. The DEPMPO spin trap was employed to detect hydroxyl and carbon-centered short living radicals in two different peracetic acid solutions and a hydrogen peroxide solution used for water disinfection either in the absence or in the presence of UV-C irradiation. Moreover, three different kinds of water (wastewater, demineralized water, distilled water) were analysed in order to assess the contribution of Fenton reactions to the radical production. The spectroscopic results were discussed in relation to the efficiency of the different oxidizing agents and UV irradiation in wastewater disinfection evaluated as Escherichia Coli, Faecal and Total Coliforms inactivation.

Journal of the Chemical Society, Perkin Transactions 2, 1991

EP 2 085 434 A1 2 5 10 15 20 25 30 35 40 45 50 55 Description

Journal of the Chemical Society, Perkin Transactions 2, 1981

The steric course of the gas-phase reaction of trans-[2 H 2] ethylene oxide with HF, HCl, and HBr... more The steric course of the gas-phase reaction of trans-[2 H 2] ethylene oxide with HF, HCl, and HBr was investigated in order to test experimentally a mechanistic proposal based on ab initio calculations involving a concerted syn-opening mechanism. In contrast with this ...

Journal of cardiovascular medicine (Hagerstown, Md.), 2006

Coronary perforation is a recognized hazard following cardiac catheterization and may lead to a c... more Coronary perforation is a recognized hazard following cardiac catheterization and may lead to a catastrophic outcome. Prompt decision-making following diagnosis is of key importance. Whether to perform prolonged attempts at percutaneous repair or to promptly refer the patient for emergency surgery soon after diagnosis still remains a matter of debate. We report the case of a 78-year-old woman suffering from coronary artery perforation during left anterior descending coronary artery percutaneous transluminal coronary angioplasty-stenting, who underwent unsuccessful multiple prolonged attempts at percutaneous repair followed by subsequent successful emergency surgery.

AORTA, 2014

Alkaptonuria is an autosomal recessive trait resulting in an error of aromatic amino acids metabo... more Alkaptonuria is an autosomal recessive trait resulting in an error of aromatic amino acids metabolism. Heyde's syndrome is a condition clustering together aortic valve stenosis and gastrointestinal bleeding from colonic angiodysplasia. At present, there is no report describing the association of the latter two syndromes in the same patient. Here we present the case of a patient with severe aortic stenosis, alkaptonuria, and Heyde's syndrome. The patient underwent aortic valve replacement by means of a valvular bioprosthesis and the histological examination of the aortic cusps revealed calcific degeneration. This was associated with stromal degeneration characterized by extra-cellular deposition of granular, brownish-pigmented material along with macrophages and multiple foci of calfication showing the same brownish pigmentation. This configuration represents the typical pattern of homogentisic acid accumulation known as ochronosis. The postoperative course was uneventful and the echocardiographic follow-up at 6 months postoperatively showed good-functioning of the aortic valve bioprosthesis.

International Journal of Organic Chemistry, 2013

The Journal of Physical Chemistry, 1994

SSRN Electronic Journal, 2000

In this paper we examine the profitability of trading strategies based on target prices embedded ... more In this paper we examine the profitability of trading strategies based on target prices embedded in equity research reports. We adopt target prices as information signals to build our portfolio strategy. At the first stage, we exploit implicit returns (difference between the current price and the target price) as a buying or short selling signal to open every transaction in the portfolio. Next, we use raw and adjusted target prices as a closing transaction signal. We build three different strategies to verify if the overshooting of target prices revealed by several studies could affect the profitability of a trading strategy based on these target prices. We have formed four portfolios within every strategy to verify whether analysts' target prices have any investment value. We find that all strategies deliver positive abnormal returns against the market. In particular, the highest and lowest implicit return classes exhibit the highest stock returns and abnormal returns. In the last part, we control these returns for systematic risk, factors through the CAPM and the Fama & French three-factor model. The positive performances of our strategies persist and, in particular, our strategies beat the market with consistent abnormal returns in all the four implicit return classes analysed. From the three factors equation, it seems that analysts tend to advise buying stocks with risk above the average market risk, with growth profile and with large market value. Conversely analysts advise selling value stocks and those with a negative beta.