5.9 / August 27, 2018
(4.7/5) (3)
Loading...

Description

Liposome Calculator is a tool for preparation and parameterizationof lipid and other surfactant suspensions (liposomes, multilamellarvesicles, etc.). It is particularly useful for drug delivery andmolecular interaction research. The application follows the commonliposome preparation procedure, as depicted inwww.volard.wordpress.com: (1) Stock solutions of lipids (or anyother compound) are mixed in an appropriate molar ratios. (2)Obtained mixture is purged with nitrogen and organic solvent isfinally evacuated under vacuum. (3) Obtained lipid mixture ishydrated and extruded or sonicated, according to the needs.Application helps to fully parameterize the complex lipid mixturesystem, providing user with complete information regardingpreparation procedure. Concentrations (molarity and mg/ml),components moles, final solution volume etc. are calculated basedupon initial data provided, such as: initial concentrations of thestock solutions, initial volumes and desired molar ratios.Application includes customizable database for storing molecularweights of the frequently used compounds. Upon typing of solutenames into component cells the software will suggest toautocomplete with stored information from the database. LiposomeFormulation can be stored and restored. Application is fullyinteractive: all system parameters are updated immediately afterany input from user (if it is sufficient!). For example: finalmolar concentration and molar ratios of the components can beadjusted at any time if molar concentrations of starting solutionsand final suspension volume are provided. Upon any of theaforementioned changes, the application will calculate the volumesof the initial solutions to fit the desired parameters. Additionalcomponents are added by touching “(+) Solution (of)” field anddeleted by touching the final “Moles (-)” field. If molecularweights (Mw, units "g/mole") of solutes are provided as well, thenconcentrations in the units of grams of solute per litre ofsolution ("g/l" equivalent to "mg/ml") can be calculated.

App Information Liposome Calculator

  • App Name
    Liposome Calculator
  • Package Name
    com.androVR3.vrliposomecalculatorplus
  • Updated
    August 27, 2018
  • File Size
    1.2M
  • Requires Android
    Android 5.0 and up
  • Version
    5.9
  • Developer
    Roman Volinsky
  • Installs
    100+
  • Price
    $1.99
  • Category
    Education
  • Developer
    Valhallankatu 8, Helsinki, Finland
  • Google Play Link

Roman Volinsky Show More...

Acid Base pH 5.7 APK
Roman Volinsky
Support and thorough titration analysis at:www.volard.wordpress.com. App requires internal storage accesspermission in order to store titration data and images.Acid Base pHis the ultimate tool for accurate estimation of pH values of acids,bases and their mixtures. This application calculates pH values ofsolutions of weak and strong, monoprotic and polyprotic acids andbases and can build titration curves and provides pH and titrantvolume values at equivalent points. Layout of "Acid Base pH".Screen is divided by two sides: acidic (left) and basic (right),comprising of initial data of solutions, such as molarconcentration, volume, proticity and optional equilibriumdissociation constants. Title fields allow to choose whether thecompound is titrant or analyte and proticity fields allows tochoose strength and proticity of acid or base. Important: Titrantcompound, by default, can be only monoprotic and strong. When molarconcentration of only one initial solution is provided (acid orbase side), the application will estimate pH of the singlesolution. On the other hand, if at least concentrations of bothsolutions are provided, then application will be able to drawtitration plot (“Plot” option in menu), based on initialconcentrations and titrant-analyte choice and provide pH andtitrant volume values at equivalent points. Furthermore, the plotof titration curve can be exported as an image or as xls worksheet.Additionally, it is possible to find titrant volume needed toachieve desired pH value, by setting any desired pH value into pHfield and pressing Calculate button.Application features.•Estimation of pH values is based on advanced quantitative chemicalanalysis which allows simultaneous calculation of all dissociationstages of acid and base and water dissociation (Kw).•Applicationcan plot titration curve and export it as an image or data file tothe “Acid Base pH” directory on local sd drive.•When molarconcentration of only one initial solution is provided (acid orbase side), the application will estimate pH of the singlesolution.•Upon pressing “EP” menu option, application displayssemi-transparent info field, listing pH and titrant volume valuesat equivalent points. This info field can be freely moved ondisplay to the most convenient position.•Application provides listof widely used indicators and draws schematic colour transitionsfor chosen indicator directly on the titration plot.•Application isable to estimate the titrant volume needed to achieve desired pHvalues (within titration range), that is particularly useful forbuffer preparation.•The dissociation constants fields accept bothformats: 1) pK values (-log(K)) and 2) regular K values, but onlyin a particular scientific format, which requires inclusion ofexponential part “e” (for example: 1e-5 instead of 0.00001, or2.5e0 instead of 2.5). Empty dissociation constant field wouldimply that this dissociation step is “strong” or complete.•Longpress on final pH field opens window showing corresponding value ofpOH and [H+] and [OH-] concentrations.•Application helps inpreparation of buffer solution, since the volume of strongelectrolyte (added to a weak electrolyte solution) can be derivedfrom the plateau region of the titration curve.
Liposome Calculator 5.9 APK
Roman Volinsky
Liposome Calculator is a tool for preparation and parameterizationof lipid and other surfactant suspensions (liposomes, multilamellarvesicles, etc.). It is particularly useful for drug delivery andmolecular interaction research. The application follows the commonliposome preparation procedure, as depicted inwww.volard.wordpress.com: (1) Stock solutions of lipids (or anyother compound) are mixed in an appropriate molar ratios. (2)Obtained mixture is purged with nitrogen and organic solvent isfinally evacuated under vacuum. (3) Obtained lipid mixture ishydrated and extruded or sonicated, according to the needs.Application helps to fully parameterize the complex lipid mixturesystem, providing user with complete information regardingpreparation procedure. Concentrations (molarity and mg/ml),components moles, final solution volume etc. are calculated basedupon initial data provided, such as: initial concentrations of thestock solutions, initial volumes and desired molar ratios.Application includes customizable database for storing molecularweights of the frequently used compounds. Upon typing of solutenames into component cells the software will suggest toautocomplete with stored information from the database. LiposomeFormulation can be stored and restored. Application is fullyinteractive: all system parameters are updated immediately afterany input from user (if it is sufficient!). For example: finalmolar concentration and molar ratios of the components can beadjusted at any time if molar concentrations of starting solutionsand final suspension volume are provided. Upon any of theaforementioned changes, the application will calculate the volumesof the initial solutions to fit the desired parameters. Additionalcomponents are added by touching “(+) Solution (of)” field anddeleted by touching the final “Moles (-)” field. If molecularweights (Mw, units "g/mole") of solutes are provided as well, thenconcentrations in the units of grams of solute per litre ofsolution ("g/l" equivalent to "mg/ml") can be calculated.
Chemical Equilibrium 2.4 APK
Roman Volinsky
Chemical Equilibrium is a tool for accurate estimation ofconcentrations and pressures of the chemical reaction reactants andproducts at equilibrium. The application derives final, equilibriumparameters based on equilibrium constants (Kc and Kp), initialconcentrations and stoichiometric coefficients. Additionally, appcalculates reaction quotient "Q" for any given concentrations andstoichiometry (Q in equilibrium is equal to Keq, so can be used forone-click calculation of Kc or Kp when all concentrations orpressures are at equilibrium!). The user may adjust stoichiometriccoefficients to fit desired reaction, and set initialconcentrations and equilibrium constant to run the calculations.For a general chemical reaction: aA + bB <=> cC + dD, theReaction Quotient (Q) is defined by: Q=(C^c*D^d)/(A^a *B^b ); whereA, B, C, D – are compounds’ concentrations or pressures and a, b,c, d are stoichiometric coefficient*. Sum of powers determines thereaction order. *Importantly, actual powers may differ fromreaction coefficients, due to overall reaction mechanismcomplexity. If Q is not equal to reaction equilibrium constant K(Kc for concentrations and Kp for pressures), then reaction is notat equilibrium and it will proceed (due to difference in forwardand reverse reaction speeds) to the direction defined by Q. If QK –reverse reaction will prevail. Example: For given reaction: 2A + 1B<=> 3C + 2D , initial reaction concentrations are Ao=0.1M,Bo=0.2M, Co=0.3M and Do=0.4M and Kc=1 M2. the Reaction Quotient (Q)is defined by: Q=(Co^3*Do^2)/(Ao^2*Bo^1 ) Upon loading the data to“Chemical Equilibrium” app, Reaction Quotient is immediatelycalculated, giving Q= 2.16 M2. Apparently Q>K, suggesting thatreaction is too close to the products side and reverse reactionwill prevail to bring the reaction back to the equilibrium. The newequilibrium concentrations of reaction components can be derivedfrom the equation: Kc=((Co-3x)^3*(Do-2x)^2)/((Ao+2x)^2*(Bo+x))Apparently, solving this equation is rather demanding task, thatturns to be unnecessary, since “Chemical Equilibrium” appimmediately returns the answer: Aeq=0.1185M, Beq=0.2092M,Ceq=0.2723M and Deq=0.3815M. The application features: To startcalculation user is required to fill in stoichiometriccoefficients, initial concentrations (pressures) of availablecomponents, and equilibrium constant Kc (Kp). Reaction coefficientsare actually representing powers and therefore define reactionorder. To start calculation initially or after updating theconcentration or coefficient fields, user is requested to tap Runbutton! Significant attention should be paid to concentration,pressure and equilibrium constant units. App automatically changesthe set of available units as per order of reaction! The basicconversions are as follows: 1 M= (1e3) mM 1 atm=101325 Pa
Chemical Solution 5.2 APK
Chemical Solution is a versatile tool forpreparation of simple and complex chemical solutions. App helps tocalculate the solution parameters upon mixing, dilution anddissolution, and solve various problems, like finding solute molesand weights and solvent volumes.Application provides users with personal support through a service,which is intended to aid the undergraduate students with numerouschemistry subjects. The involved students may submit questionsdirectly to developer.The first activity calculates the concentrations, moles and molarratios, etc. of the final solution formed by mixture of severalsolutions or by simple dilution with solvent.In most complicated case, user may input parameters of threeinitial solutions, which are going to be mixed, and optionallyvolume of solvent (to dilute) and then press "Calculate" to findmolar concentration and total volume of the final mixture, molesand molar ratios of all solutes. Except that, this activity may beused for plenty of small things:•Simple dilution: add one solution (by filling all required fields)and pure solvent to get what portions of solution and solvent youneed, to dilute solution from, let’s say, 2M to 25mM.•When molar weight of solute is available, then final concentrationin mg per ml (mg/ml is equal to g/l) can be calculated, which ishelpful for actual preparation of solution.•When initial solution concentration is provided in mg/ml, thenmolar weights of solutes are required, and application will findmoles and molar concentrations.•In the similar way, moles of solute can be found, just by usingone solution row. Input Mw, concentration in mg/ml and requiredvolume and press “Calculate”.The second activity deals with solid solutes (powders) dissolution.It provides total molarity, molality, mass/volume concentration,moles and molar ratios of dissolved solutes, based upon molarweights, dissolved masses and final solution density.This app is part of Chemistry and Biochemistry and ChemicalEngineering Lab Pack including several apps dealing with chemicalsolutions, reaction equilibrium, kinetics, acid base neutralisationreaction, titration, and liposome preparation.The preparation of the desired solutions may be further facilitatedby using Chemical Solution Wizard app and deprotonation kineticsand equilibrium may be followed by using Chemical Kinetics andChemical Equilibrium apps. Solubility and precipitation problemsare targeted by Solubility Products app. Additionally, acid basetitration and pH calculations are facilitated by Acid Base pH app.pH values of the compounds having numerous functional groups(carboxylic and amino-derivatives, like amino acids) can becalculated and plotted by means of Isoelectric Point app.
Diet Notebook 3.4 APK
Diet Notebook is an ultimate tool to keeptrack of main food ingredients consumption and to plan and analyzedaily ration. This utility provides means for storing a basic foodand complex meal parameters to further facilitate the building ofan appropriate diet and nutrition courses.Layout:1.Calculator. Allows creation of meals and calculation of totalingredient parameters: Mass, Energy, Protein, Carbohydrates(CarboH) and Fat content. The component cells will suggest addingfood from the Food Database, based on users’ input. The multiplierfield (#) provides means for direct multiplication of allparameters in the row if several food items of the same kind wereadded. Similarly, manual change of mass will immediately update allother parameters. New food row can be added (+) or removed (x), andany row can be emptied by setting the multiplier to “0x”. Thecreated course can be further saved to the Diary (to include indaily consumption) or alternatively to Food Database.2.Diary. Includes meals that user had at defined times. The datawill be further analyzed and presented in Daily Ration section. Toedit or load data, please press on the desired row. Upon press on“edit” option user will be redirected to the Calculator wherecourse will be detailed and ready to change. The edited course willreplace the previous! If user is not interested in replacing thediary row then alternatively “load” option should be chosen.3.Daily Ration. Here the data from Diary is automatically analyzedand daily consumption details are presented to facilitate thefurther planning. The data along with personal weight can beexported at any time in the next section - Correlation Plot.4.Correlation Plot. The graphical representation of dailyconsumption along with personal weight. The plot helps to visualizeweight dependence on main food ingredient consumption and on foodintrinsic energy. This representation helps to better investigatethe diet and nutrition approach results and retrieve the nototherwise obvious dependency of the personal weight on main foodparameters. The plot can be exported as image or date (.xls format,supported by MS Office™) to the “Diet Notebook” folder on local SD.Important(!): all food parameters are associated with left Y-axis,while personal weight is associated with right Y-axis.5.Food Database. The local, manually created user database, thatcan be used to automatically complete data in Calculator based onitem name. May include basic foods and complex courses. The itemsmay be added directly by pressing (+) or imported from Calculator(in case of custom sophisticated courses). To edit the data, pleasepress on the desired row.6.Personal Weight. The Database for the measured personal weight.To edit the data, please press on the desired row. The data isvisualized in Correlation Plot section, where can also beexported.Units.The application is units free, meaning that user is free to choosethe set of units for use in the application. Usually, the mostconvenient way is to use most accepted units that appears on labelson food packages in the current region. The application was writtenwith the following unit’s set in mind: grams for mass, kCal forEnergy and kg for personal weight. User is responsible for unit’sconsistency! For proper correlation user must use the same set ofunits throughout the application. Once different units appear onthe label, user must convert the units to the chosen one topreserve the consistency!The common conversion schemes:1 kiloCalories (kCal) = 4.18 kiloJoules (kJ) : To convert from kJto kCal divide the value by 4.18!To convert from kCal to kJ multiply the value by 4.18!1 kilogram (kg) = 2.205 pounds (lb) : To convert from kg to lbmultiply the value by 2.205!To convert from lb to kg divide the value by 2.205!1 ounce (oz) = 28 grams (g) : To convert from g to oz divide thevalue by 28!To convert from oz to g multiply the value by 28!
Isoelectric Point 2.5 APK
Roman Volinsky
Isoelectric Point (IEP) calculates a charge of macromolecule(proteins, peptides etc.), consisting of basic and acidic residuesas a function of pH value of solution. The application graphicallyrepresents the charge through the whole range of pH values andfinds out the isoelectric point value. App requires internalstorage access permission in order to store plot data and image.Layout of "IEP". The “Chain” menu lets to choose the various chainsfrom the uploaded FASTA file for further analysis. The sequence ofpolymer molecule is inserted into the “Sequence” field in thesingle letter format (YHRK…). The sequence can be typed or uploadedfrom the local FASTA file (for polypeptides). Long press on“Sequence” field calls for file finder dialog that let the user toupload the FASTA file from local SD. The next “Analyse” button,when clicked, analyses the sequence, calculates the total molarweight and counts and fills the number of recognized acidic andbasic residues into the appropriate cells in the amino acid infotable. Cells for acidic residues are coloured red and for basic areblue. The table comprised of nine sets of three cells per eachamino acid. The three cells provide the charge contributing aminoacid acronym, pKa value and number of this particular residue inthe macromolecule, respectively. The “-C” and “-N” cells representC- and N-terminus respectively. The “Calculate” button initiatesthe analysis of the table data (including customized input) andoutputs the IEP value. Important! Table data can be fullycustomized after or without any sequence analysis! IEP calculationuses table values, whatever their origin. Application features. •The application can extract the protein sequence (chain by chain)from FASTA files. • Estimates the isoelectric point ofmacromolecule based on pKa values provided. • Application plotsrelative charge curve as function of pH and export it as an imageor a data file to the “Isoelectric point” directory on local SDdrive. • Application provides data for most common acidic and basicamino acid residues, but every cell can be updated! Sequenceanalysis reverts the table back to its original state.
Chemical Solution Wizard 4.7 APK
Roman Volinsky
This application helps to prepare and fully parameterize variouschemical solutions, starting from simple dilution and up to mixtureof infinite number of independent components and pure solvent. Apprequires internal storage access permission in order to storedatabase.This app is part of Chemistry Lab Pack including 9 appsdealing with chemical solutions, reaction equilibrium, solubility,precipitation, acid base neutralisation reaction, titration,chemical kinetics and liposome preparation.First activity, "Mixingsolutions", makes it easy to parameterize complex mixture ofseveral initially provided solutions. Second activity,"Dissolution", deals with complex solution formed by dissolution ofmultiple solid solutes. Furthermore, it allows calculation ofvarious parameters, such as concentration (molarity, molality andmg/ml), solute moles and molar ratios upon mixing and dilution ofready solutions and upon dissolution of multiple solid solutes.Application includes fully customizable database for storingmolecular weights of the frequently used compounds. The stored datawill be available to autocomplete the typed solute names andautomatically provide Mw. This application is fully interactive:all system parameters (including final) can be adjusted to meet theneeds. For example: final molar concentration, total solutionvolume and molar ratios of the components can be adjusted at anytime to get needed volumes of initial solutions or masses ofsolutes that have to be taken in order to prepare the finalsolution.Additional application features. •Unlimited number ofcomponents is available. Additional components are added bytouching “Components (+)” field and deleted by touching the bottomleft title field signed with (-). The component list is numberedand scrollable. Please pay attention to unused componentscontaining data, that may disturb with calculations!•The app isincluding Molar Mass Analyser. Press on arrow in the Mw fieldinitiates analysis of chemical formula in the component field andset the value to Mw field. No charge values should be used. Validexamples: Mg(HCO3)2, CaCl2.2H2O, CaCl2*2H2O, (NH4)2Fe(SO4)2.6H2O,Mg(H2PO4)2, C6H12O6. Analyser is case sensitive.•Applicationincludes database for storing molecular weights of the frequentlyused compounds. The database can be stored and restored to and fromphone storage, so practically, it can be edited and uploadedexternally (while preserving the name and structure). Upon databaserestoring, system automatically backs up the current version, so itcan be restored at any time. The stored database files can be foundon phone memory in folder “Chemical Solution Wizard”.•Upon typingof solute names into component cells the software will suggest toautocomplete with stored information from the database. •Theapplication is fully interactive: all system parameters are updatedimmediately after any input from user (if it is sufficient,otherwise warning will be shown). •If molecular weights (Mw, units"g/mole") of solutes are provided as well, then concentrations inunits of grams of solute per litre of solution ("g/l" equivalent to"mg/ml") can be calculated.•In "Dissolution" activity, long presson Total Molarity cell will call the menu, where user can choosethe options for solution parameters adjustment upon change in totalmolarity.
Langmuir Monolayer 1.8 APK
Roman Volinsky
Langmuir Monolayer helps to prepare andinvestigate thin monomolecular films, that widely used inscientific and industrial research. Particularly, this applicationis useful for preparation of lipid monolayers at air-waterinterface.This app is a part of Bio- Chemistry and Chemical Engineering LabPack including several apps dealing with chemical solutions,reaction equilibrium and kinetics, acid base neutralisationreaction, titration, and liposome and monolayer preparation.The application supports calculation of final molar concentration,volume, moles and average molar weight of mixture of up to threeindependent solutions with their optional dilution. Finally, basedon calculated parameters of the solution, the applicationcalculates the area per molecule available upon preparation of thinmonomolecular film on the given subphase.First activity, "Mixing solutions", makes it easy to parameterizeand prepare complex mixture of several stock solutions.Second activity, "Analysis", helps with parameterization ofmonolayer film composed of preliminary prepared complexsolution.Layout of "Mixing solutions". Three input rows are corresponding tothe three optional initial stock solutions (of the same ordifferent solutes), which are going to be mixed to produce thefinal complex solution. Each row consists of the following datafields: solution name (mostly named after main solute), solutes'molar weight, molar concentration in the initial solution and thevolume of the initial solution. Last cell represents molar fractionof the particular solute, that will be calculated automaticallyupon pressing “done” or “enter” key in the keyboard, and may beadjusted later to get the desired component ratio.Last row represents final solution parameters. First comes thevolume of pure solvent that optionally can be added to dilute thesolution, then the Total Molarity and Total solution volume, thatcan be adjusted at any time, on condition that molar concentrationsof the initial solution/s are provided.Layout of "Analysis". The activity window divided to data panel(left) and results panel (right):The data panel parameters:Total Concentration: Total solution components’ (lipids, etc..)concentration. Automatically uploaded from Mixing solutionsactivity and can be corrected at any time.Added Volume: Solution volume that actually used for monolayerpreparation.Trough Area: Total area of the subphase (water, etc..) surfaceavailable for monolayer (in square cm).The results panel parameters:Number of Molecules: Total number of components’ molecules inmonolayer.Number of Moles: Total number of components’ moles inmonolayer.Area per Molecule: Average surface area available for singlemolecule (in square angstroms).Additional application features.•Application includes database for storing molecular weights of thefrequently used compounds.•Solution name field is input sensitive and may be auto completedwith information stored in the database.•The application is fully interactive: all system parameters areupdated immediately after any input from user (if it is sufficient,otherwise warning will be shown).•If molecular weights (Mw, units "g/mole") of solutes are providedas well, then the average Mw can be calculated, which is importantfor monolayer preparation.Important points.•The user should follow the simple rule to ensure properfunctionality: all known data should be provided in the followingorder (Only yellow fields are editable): solution or solutenicknames (optional)-> Mw -> initial concentrations(must!)-> volumes (if known)-> molar ratios (if known)->Total Molarity (if known)-> Total Volume (if known).•If user updates molar ratios (percent only), program will notstart calculations until sum of the ratios will be 100% exactly andobviously, not before than initial concentrations areprovided.•Application assigns dot as a decimal separator.
Loading...