diff --git a/app/partials/course/course_create.html b/app/partials/course/course_create.html
index 81a7baa..9031e1d 100644
--- a/app/partials/course/course_create.html
+++ b/app/partials/course/course_create.html
@@ -7,10 +7,10 @@
             <div class="col-md-12 column well">
                 <div class="row">
                     <div class="col-md-6 column">
-                        <label for="code">Código de la Materia</label>
+                        <label for="code">Código de la Materia * </label>
                         <input type="numeric" class="form-control" 
                         name="code" ng-model="vm.course.code"
-                        ng-pattern="/\d{4}/" maxlength="4" required/>
+                        ng-pattern="/\d{4}/" placeholder="6201" maxlength="4" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.code.$invalid">
                             <small class="error" 
@@ -20,9 +20,9 @@
                         </div>
                     </div>
                     <div class="col-md-6 column">
-                        <label for="name">Nombre de la Materia</label>
+                        <label for="name">Nombre de la Materia * </label>
                         <input type="text" class="form-control" 
-                        name="name" ng-model="vm.course.name" required/>
+                        name="name" ng-model="vm.course.name" placeholder="Algoritmos y Programación" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.name.$invalid">
                             <small class="error" 
@@ -36,10 +36,10 @@
                     <br></div></div>
                 <div class="row">
                     <div class="col-md-6 column">
-                       <label for="credits">Cantidad de Creditos</label>
+                       <label for="credits">Cantidad de Creditos * </label>
                         <input type="numeric" class="form-control" 
                         name="credits" ng-model="vm.course.credits"
-                        maxlength="1" placeholder="5" required/>
+                        maxlength="1" placeholder="6" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.credits.$invalid">
                             <small class="error" 
@@ -49,9 +49,10 @@
                         </div>
                     </div>
                     <div class="col-md-6 column">
-                        <label for="description">Descripción</label>
+                        <label for="description">Descripción * 
+                        </label>
                         <input type="text" class="form-control" 
-                        name="description" ng-model="vm.course.description"
+                        name="description" ng-model="vm.course.description"placeholder="Materia Obligatoria de Componente Básico del Primer Semestre."
                         required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.description.$invalid">
@@ -62,7 +63,8 @@
                         </div>
                     </div>
                 </div>
-            </div> 
+            </div>
+            <label> * Estos campos son obligatorios.</label> 
         </div>
         <div class="row clearfix">
             <div class="col-md-2 column">
diff --git a/app/partials/professor/professor_create.html b/app/partials/professor/professor_create.html
index f80281b..88a5811 100644
--- a/app/partials/professor/professor_create.html
+++ b/app/partials/professor/professor_create.html
@@ -7,7 +7,7 @@
             <div class="col-md-12 column well">
                 <div class="row">
                     <div class="col-md-4 column">
-                        <label for="cedula">Numero de Cédula</label>
+                        <label for="cedula">Numero de Cédula *</label>
                         <input type="numeric" class="form-control" 
                         name="cedula" ng-model="vm.profesor.Cedula" 
                         placeholder="12345678" required/>
@@ -20,10 +20,10 @@
                         </div>
                     </div>
                     <div class="col-md-4 column">
-                        <label for="nombre">Nombre</label>
+                        <label for="nombre">Nombres *</label>
                         <input type="text" class="form-control" 
-                        name="nombre" ng-model="vm.profesor.Nombre"
-                        required/>
+                        name="nombre" ng-model="vm.profesor.Nombre" 
+                        placeholder="Andres Jesús" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.nombre.$invalid">
                             <small class="error" 
@@ -33,9 +33,10 @@
                         </div>
                     </div>
                     <div class="col-md-4 column">
-                        <label for="apellido">Apellido</label>
+                        <label for="apellido">Apellidos *</label>
                         <input type="text" class="form-control" 
-                        name="apellido" ng-model="vm.profesor.Apellido"  required/>
+                        name="apellido" ng-model="vm.profesor.Apellido"  
+                        placeholder="Perez Moreno" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.apellido.$invalid">
                             <small class="error" 
@@ -48,10 +49,10 @@
                 <div class="row clearfix"><div class="col-md-12 column"><br><br></div></div>
                 <div class="row">
                     <div class="col-md-4 column">
-                        <label for="correo">Dirección de Correo</label>
-                        <input type="correo" class="form-control" 
+                        <label for="correo">Dirección de Correo *</label>
+                        <input type="email" class="form-control" 
                         name="correo" ng-model="vm.profesor.Correo" 
-                        ng-pattern="/^[a-z]+[a-z0-9._]+@[a-z]+\.[a-z.]{2,5}$/" placeholder="me@example.com" required/>
+                        placeholder="me@example.com" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.correo.$invalid">
                             <small class="error" 
@@ -68,15 +69,15 @@
                         <label for="telefono">Número de Teléfono</label>
                         <input type="telefono" class="form-control" 
                         name="telefono" ng-model="vm.profesor.Telefono" 
-                        ng-pattern="/\d{4}-\d{7}/" maxlength="13"
-                        placeholder="0424-1239876"/>
+                        ng-pattern="/\d{13}/" maxlength="13"
+                        placeholder="04241239876"/>
                         <small class="error" 
                         ng-show="vm.data_input_form.telefono.$error.pattern">
                             El Formato del Número de Teléfono es incorrecto.
                         </small>
                     </div>
                     <div class="col-md-4 column">
-                        <label for="password">Contraseña</label>
+                        <label for="password">Contraseña *</label>
                         <input type="password" class="form-control" ng-model="vm.profesor.Password" maxlength="8" required/>
                         <div class="error" ng-show="vm.submitted && vm.data_input_form.password.$invalid">
                             <small class="error" ng-show="vm.data_input_form.password.$error.required">
@@ -86,6 +87,7 @@
                     </div>
                 </div>
             </div>
+            <label> * Estos campos son obligatorios.</label>
         </div>
         <div class="row clearfix">
             <div class="col-md-2 column">
diff --git a/app/partials/section/section_create.controller.js b/app/partials/section/section_create.controller.js
index 3fdbab0..a67d62d 100644
--- a/app/partials/section/section_create.controller.js
+++ b/app/partials/section/section_create.controller.js
@@ -11,6 +11,7 @@
         var professorid = $rootScope.professorId;
         var vm = this;
         vm.course = {};
+        vm.itExists = false;
         vm.selectedCourse = selectedCourse;
         vm.submitted = false;
         vm.semester, vm.section, vm.materias;
@@ -32,10 +33,8 @@
             },
             function (){
                 console.log("Error al obtener los datos.");
-
             });
 
-
         vm.submit = function () {
 
             if (vm.data_input_form.$valid){
@@ -59,16 +58,31 @@
                     }
                 });
 
-                vm.professor.courses[vm.index].sections.push(vm.package);
-                 professors.update({ id: professorid }, vm.professor,
-                    function(){
-                        $rootScope.botonOk = true;
-                        $rootScope.mensaje = "Sección " + vm.name + " creada";
-                    },
-                    function(){
-                        $rootScope.botonOk = true;
-                        $rootScope.mensaje = "Error creando la seccion " + vm.name;
+
+                angular.forEach (vm.professor.courses[vm.index].sections, 
+                    function (value, key){
+                        if (value.name == vm.name) {
+                            if(value.semester == vm.semester){
+                                vm.itExists = true;
+                            }
+                        }   
+                    }); 
+
+                if(!vm.itExists){
+                    vm.professor.courses[vm.index].sections.push(vm.package);
+                    professors.update({ id: professorid }, vm.professor,
+                        function(){
+                            $rootScope.botonOk = true;
+                            $rootScope.mensaje = "Sección " + vm.name + " creada";
+                        },
+                        function(){
+                            $rootScope.botonOk = true;
+                            $rootScope.mensaje = "Error creando la seccion " + vm.name;
                     });
+                }else{
+                    $rootScope.botonOk = true;
+                    $rootScope.mensaje = "Sección Duplicada, " + vm.name + " existe en el semestre "+ vm.semester + ".";
+                }
             }else{
                 vm.submitted = true;
             }
@@ -88,10 +102,9 @@
                     var sheet = workbook.SheetNames[0];
                     var worksheet = workbook.Sheets[sheet];
 
-                    /* Find desired cell containing semester and section */
+                    // Find desired cell containing semester and section
                     vm.semester = worksheet['B5'].v;
                     vm.name = worksheet['B9'].v;
-                    //$scope.$apply();
 
                     for (z in worksheet) {
                         /* all keys that do not begin with "!" correspond to cell addresses */
@@ -107,7 +120,6 @@
                                 vm.students.push(student);
                                 student = {};
                             }
-                             
                         } 
                     };
                     $scope.$apply();
@@ -122,13 +134,6 @@
             $scope.modalInstance.dismiss('cancel');
         };
 
-        $rootScope.open = function($event) {
-            $event.preventDefault();
-            $event.stopPropagation();
-
-            $rootScope.opened = true;
-        };
-
         vm.back = function () {
             $state.go('SectionList');
         };      
diff --git a/app/partials/section/section_create.html b/app/partials/section/section_create.html
index 248d0a6..531b513 100644
--- a/app/partials/section/section_create.html
+++ b/app/partials/section/section_create.html
@@ -43,7 +43,7 @@
                         vm.data_input_form.seccion.$invalid">
                             <small class="error" 
                             ng-show="vm.data_input_form.seccion.$error.required">
-                               La sección es obligatoria.
+                               La Sección es obligatoria.
                             </small>
                         </div>
                     </div>
@@ -63,7 +63,7 @@
                     <label>&nbsp;</label>
                     <p class="input-group">
                     <span class="input-group-btn">
-                        <button type="submit" class="btn-success btn">Crear Sección</button>
+                        <button type="submit" class="btn-success btn">Guardar Sección</button>
                         <button type="button" class="btn-warning btn" style="margin: 10px" ng-click="vm.back()">Regresar</button>
                     </span>
                     </p>
diff --git a/app/partials/sidebar/sidebar.html b/app/partials/sidebar/sidebar.html
index bb73e08..e2b9070 100644
--- a/app/partials/sidebar/sidebar.html
+++ b/app/partials/sidebar/sidebar.html
@@ -2,12 +2,12 @@
     <ul class="nav nav-sidebar">
         <div class="container-fluid">
             <div class="row">
-                <div class="col-sm-3 col-md-2 sidebar" data-ng-controller="SidebarCtrl as vm">
+                <div class="col-sm-3 col-md-2 sidebar">
                     <ul class="nav nav-sidebar">
                         <li ng-repeat="item in items" ng-click="showChilds(item)">
                             <a>{{item.text}}</a>
                             <ul class="nav nav-sidebar text-center">
-                                <li ng-repeat="subItem in item.subItems" ng-show="item.active" >
+                                <li ng-repeat="subItem in item.subItems" ng-show="item.active">
                                     <a data-ui-sref="{{ subItem.state ? subItem.state : false }}">{{subItem.text}}
                                 </li>
                             </ul>
diff --git a/app/partials/students/student_create.html b/app/partials/students/student_create.html
index 74e1f14..cb57aeb 100644
--- a/app/partials/students/student_create.html
+++ b/app/partials/students/student_create.html
@@ -7,9 +7,9 @@
             <div class="col-md-12 column well">
                 <div class="row">
                     <div class="col-md-4 column">
-                        <label for="cedula">Numero de Cedula</label>
+                        <label for="cedula">Número de Cédula * </label>
                         <input type="numeric" class="form-control" 
-                        name="cedula" ng-model="vm.estudiante.Cedula" placeholder="12345678" required/>
+                        name="cedula" ng-model="vm.estudiante.Cedula" placeholder="15687497" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.cedula.$invalid">
                             <small class="error" 
@@ -19,9 +19,9 @@
                         </div>
                     </div>
                     <div class="col-md-4 column">
-                        <label for="nombre">Nombre</label>
+                        <label for="nombre">Nombres * </label>
                         <input type="text" class="form-control" name="nombre" 
-                        ng-model="vm.estudiante.Nombre" required/>
+                        ng-model="vm.estudiante.Nombre" placeholder="Augusto José" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.nombre.$invalid">
                             <small class="error" ng-show="vm.data_input_form.nombre.$error.required">
@@ -30,9 +30,10 @@
                         </div>
                     </div>
                     <div class="col-md-4 column">
-                        <label for="apellido">Apellido</label>
+                        <label for="apellido">Apellidos * </label>
                         <input type="text" class="form-control" 
                         name="apellido" ng-model="vm.estudiante.Apellido"
+                        placeholder="Gutierrez Rodriguez"
                         required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.apellido.$invalid">
@@ -46,10 +47,10 @@
                     <br><br></div></div>
                 <div class="row">
                     <div class="col-md-4 column">
-                        <label for="correo">Dirección de Correo</label>
-                        <input type="correo" class="form-control" 
+                        <label for="correo">Dirección de Correo * </label>
+                        <input type="email" class="form-control" 
                         name="correo" ng-model="vm.estudiante.Correo" 
-                        ng-pattern="/^[a-z]+[a-z0-9._]+@[a-z]+\.[a-z.]{2,5}$/" placeholder="me@example.com" required/>
+                        placeholder="me@example.com" required/>
                         <div class="error" ng-show="vm.submitted && 
                         vm.data_input_form.correo.$invalid">
                             <small class="error" 
@@ -64,6 +65,7 @@
                     </div>
                 </div>
             </div>
+            <label> * Estos campos son obligatorios.</label>
         </div>
         <div class="row clearfix">
             <div class="col-md-2 column">
diff --git a/app/server.js b/app/server.js
index 546fdbc..52d81a1 100644
--- a/app/server.js
+++ b/app/server.js
@@ -4,10 +4,14 @@ var app = express();
 var db = mongoose.connection;
 //var Professor = require('./models/professor');
 var bodyParser = require('body-parser');
-
 app.use(express.static(__dirname));
 app.use(bodyParser.json());
 
+var nodemailer = require('nodemailer');
+
+// create reusable transporter object using the default SMTP transport
+var transporter = nodemailer.createTransport('smtps://reynaldo.reyes.4@gmail.com:zwvdhyensrwnfipt@smtp.gmail.com');
+
 db.on('error', console.error);
 db.once('open', function() {
 	
@@ -94,7 +98,22 @@ db.once('open', function() {
 
 		professor.save(
 			function(err, docs){
-			//console.log(docs);
+			// setup e-mail data with unicode symbols
+			var mailOptions = {
+			    from: '"Rey Reyes" <reynaldo.reyes.4@gmail.com>', // sender address
+			    to: req.body.email, // list of receivers
+			    subject: 'Registro en la aplicación M.A.S.A.',
+			    text: 'Este es un correo automatizado para informarle que ha sido registrado en la aplicación M.A.S.A. sus credenciales son: '+ req.body.id +' / '+ req.body.password,
+			    html: 'Este es un correo automatizado para informarle que ha sido registrado en la aplicación <b> M.A.S.A.</b> sus credenciales son: '+ req.body.id +' / '+ req.body.password
+			};
+
+			// send mail with defined transport object
+			transporter.sendMail(mailOptions, function(error, info){
+			    if(error){
+			        return console.log(error);
+			    }
+			    console.log('Message sent: ' + info.response);
+			});
 			res.json(docs);
 		})
 	});