def __init__(self):
""" Get all needed values from the store"""
store = get_store()
# The length of the capillary (centimeter)
self.total_length = LengthUnits.convert_unit(float(store.get('Capillary')["value"]),
store.get('Capillary')["unit"],
u"cm")
# The window length (centimeter)
self.to_window_length = LengthUnits.convert_unit(float(store.get('Towindow')["value"]),
store.get('Towindow')["unit"],
u"cm")
# The capillary inside diameter (micrometer)
#PROBLEM WITH UNICODE NON ASCII
self.diameter = LengthUnits.convert_unit(float(store.get('Idiameter')["value"]),
store.get('Idiameter')["unit"],
u"µm")
# The pressure drop across the capillary (mbar)
self.pressure = PressureUnits.convert_unit(float(store.get('Pressure')["value"]),
store.get('Pressure')["unit"],
u"mbar")
# The time the pressure is applied (second)
self.duration = TimeUnits.convert_unit(float(store.get('Time')["value"]),
store.get('Time')["unit"],
u"s")
# The buffer viscosity (cp)
self.viscosity = float(store.get('Viscosity')["value"])
#molecular weight (g/mol)
self.molweight = float(store.get("Molweight")["value"])
# Analyte concentration (g/L)
if store.get('Concentration')["unit"] == u"mmol/L":
tmpconcetration = MolConcentrationUnits.convert_unit(float(store.get('Concentration')["value"]),
store.get('Concentration')["unit"],
u"mol/L")
self.concentration = self.molweight * tmpconcetration
else:
self.concentration = float(store.get('Concentration')["value"])
# The voltage applied to the capillary (volt)
self.voltage = VoltUnits.convert_unit(float(store.get('Voltage')["value"]),
store.get('Voltage')["unit"],
u"V")
# The current applied to the capillary (microampere)
self.electric_current = float(store.get('Electriccurrent')["value"])
# The detection time (s)
self.detection_time = TimeUnits.convert_unit(float(store.get('Detectiontime')["value"]),
store.get('Detectiontime')["unit"],
u"s")
# The electro-osmosis time (s)
self.electro_osmosis_time = TimeUnits.convert_unit(float(store.get('Electroosmosis')["value"]),
store.get('Electroosmosis')["unit"],
u"s")
def save_flow_result(self):
""" compute and save the result for the flow screen """
store = get_store()
try:
strengh = self.field_strength()
microeof = self.micro_eof()
lpermin = self.length_per_minute()
flowrate = self.flow_rate_flow()
except ZeroDivisionError:
if self.total_length == 0:
return 1, "The capillary length cannot be null"
elif self.electro_osmosis_time:
return 1, "The EOF Time cannot be null"
else:
return 1, "The voltage cannot be null"
if self.to_window_length > self.total_length:
return 1, "The length to window cannot be greater than the capillary length"
#saving
store.put("Fieldstrength", value=strengh, unit="V/cm")
store.put("MicroEOF", value=microeof, unit="cm²/V/s")
store.put("Lengthpermin", value=LengthUnits.convert_unit(lpermin, u'm', u'cm'), unit="cm")
store.put("Flowrate", value=flowrate, unit="nL/min")
return 0, ""
def test_convert_millimeter_to_centimeter(self):
value = LengthUnits.convert_unit(10, 'mm', 'cm')
self.assertEqual(value, 1)
def test_convert_meter_to_meter(self):
value = LengthUnits.convert_unit(10, 'm', 'm')
self.assertEqual(value, 10)
